int a = 2;
int b = 4;
int c = 14;
int d = 12;
int e = 13;
int f = 5;
int g = 18;

void setup() {
  pinMode(a, OUTPUT);
    pinMode(b, OUTPUT);
      pinMode(c, OUTPUT);
        pinMode(d, OUTPUT);
          pinMode(e, OUTPUT);
            pinMode(f, OUTPUT);
              pinMode(g, OUTPUT);
              }

              void loop() {
                // For 9
                  digitalWrite(a, HIGH);
                    digitalWrite(b, HIGH);
                      digitalWrite(c, HIGH);
                        digitalWrite(d, LOW);
                          digitalWrite(e, LOW);
                            digitalWrite(f, HIGH);
                              digitalWrite(g, HIGH);
                                delay(1000);

                                  // For 8
                                    digitalWrite(a, HIGH);
                                      digitalWrite(b, HIGH);
                                        digitalWrite(c, HIGH);
                                          digitalWrite(d, HIGH);
                                            digitalWrite(e, HIGH);
                                              digitalWrite(f, HIGH);
                                                digitalWrite(g, HIGH);
                                                  delay(1000);

                                                    // For 7
                                                      digitalWrite(a, HIGH);
                                                        digitalWrite(b, HIGH);
                                                          digitalWrite(c, HIGH);
                                                            digitalWrite(d, LOW);
                                                              digitalWrite(e, LOW);
                                                                digitalWrite(f, LOW);
                                                                  digitalWrite(g, LOW);
                                                                    delay(1000);

                                                                      // For 6
                                                                        digitalWrite(a, HIGH);
                                                                          digitalWrite(b, LOW);
                                                                            digitalWrite(c, HIGH);
                                                                              digitalWrite(d, HIGH);
                                                                                digitalWrite(e, HIGH);
                                                                                  digitalWrite(f, HIGH);
                                                                                    digitalWrite(g, HIGH);
                                                                                      delay(1000);

                                                                                        // For 5
                                                                                          digitalWrite(a, HIGH);
                                                                                            digitalWrite(b, LOW);
                                                                                              digitalWrite(c, HIGH);
                                                                                                digitalWrite(d, HIGH);
                                                                                                  digitalWrite(e, LOW);
                                                                                                    digitalWrite(f, HIGH);
                                                                                                      digitalWrite(g, HIGH);
                                                                                                        delay(1000);

                                                                                                          // For 4
                                                                                                            digitalWrite(a, LOW);
                                                                                                              digitalWrite(b, HIGH);
                                                                                                                digitalWrite(c, HIGH);
                                                                                                                  digitalWrite(d, LOW);
                                                                                                                    digitalWrite(e, LOW);
                                                                                                                      digitalWrite(f, HIGH);
                                                                                                                        digitalWrite(g, LOW);
                                                                                                                          delay(1000);

                                                                                                                            // For 3
                                                                                                                              digitalWrite(a, HIGH);
                                                                                                                                digitalWrite(b, HIGH);
                                                                                                                                  digitalWrite(c, HIGH);
                                                                                                                                    digitalWrite(d, LOW);
                                                                                                                                      digitalWrite(e, LOW);
                                                                                                                                        digitalWrite(f, LOW);
                                                                                                                                          digitalWrite(g, HIGH);
                                                                                                                                            delay(1000);

                                                                                                                                              // For 2
                                                                                                                                                digitalWrite(a, HIGH);
                                                                                                                                                  digitalWrite(b, LOW);
                                                                                                                                                    digitalWrite(c, HIGH);
                                                                                                                                                      digitalWrite(d, HIGH);
                                                                                                                                                        digitalWrite(e, HIGH);
                                                                                                                                                          digitalWrite(f, LOW);
                                                                                                                                                            digitalWrite(g, HIGH);
                                                                                                                                                              delay(1000);

                                                                                                                                                                // For 1
                                                                                                                                                                  digitalWrite(a, LOW);
                                                                                                                                                                    digitalWrite(b, HIGH);
                                                                                                                                                                      digitalWrite(c, HIGH);
                                                                                                                                                                        digitalWrite(d, LOW);
                                                                                                                                                                          digitalWrite(e, LOW);
                                                                                                                                                                            digitalWrite(f, LOW);
                                                                                                                                                                              digitalWrite(g, LOW);
                                                                                                                                                                                delay(1000);
                                                                                                                                                                                }