int pins[] = {21,4,14,12,2,5,22};

void turnOn(){//
  int i,s = 7;
  for(int i=0;i<s;i++){
    pinMode(pins[i],OUTPUT);
  }
}
void setup() {
  turnOn();
}

void loop() {
  int a=0,b=1,c=2,d=3,e=4,f=5,g=6;
  int i,s = 7;
  for(int i=0;i<s;i++){
    if(i==g){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
  //one
  for(int i=0;i<s;i++){
    if(i==b||i==c){
      digitalWrite(pins[i], LOW);
    }else{
      digitalWrite(pins[i], HIGH);
    }
  }
  delay(1000);
  //two
  for(int i=0;i<s;i++){
    if(i==c||i==f){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
  //three
  for(int i=0;i<s;i++){
    if(i==e||i==f){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
  //four
  for(int i=0;i<s;i++){
    if(i==a||i==d||i==e){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
  //five
  for(int i=0;i<s;i++){
    if(i==b||i==e){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
  //sixth
  for(int i=0;i<s;i++){
    if(i==b){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
  //seven
  for(int i=0;i<s;i++){
    if(i==a||i==b||i==c){
      digitalWrite(pins[i], LOW);
    }else{
      digitalWrite(pins[i], HIGH);
    }
  }
  delay(1000);
  //eight
  for(int i=0;i<s;i++){
      digitalWrite(pins[i], LOW);
  }
  delay(1000);
  //nine
  for(int i=0;i<s;i++){
    if(i==e){
      digitalWrite(pins[i], HIGH);
    }else{
      digitalWrite(pins[i], LOW);
    }
  }
  delay(1000);
}