void setup() {
  // put your setup code here, to run once:
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
pinMode(5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(7, HIGH);
delay(400);


digitalWrite(6, HIGH);
delay(800);

digitalWrite(6, LOW);
delay(400);

digitalWrite(7, LOW);
delay(400);

digitalWrite(5, LOW);
delay(400);

digitalWrite(5, HIGH);
delay(600);

digitalWrite(7, HIGH);
delay(400);

digitalWrite(6, HIGH);
delay(800);

digitalWrite(6, LOW);
delay(400);

digitalWrite(7, LOW);
delay(400);

digitalWrite(5, LOW);
delay(400);

digitalWrite(6, HIGH);
delay(800);

digitalWrite(6, LOW);
delay(400);

digitalWrite(5, HIGH);
delay(600);

digitalWrite(5, HIGH);
delay(600);


digitalWrite(6, HIGH);
delay(800);
}