#define a 1
#define b 2
#define c 3
#define d 4
#define e 5
#define f 6
#define g 7

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