void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

digitalWrite(4, HIGH);
delay(5000);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);
delay(5000);
digitalWrite(5, LOW);
digitalWrite(6, HIGH);
delay(5000);
digitalWrite(6, LOW);
digitalWrite(3, HIGH);
delay(5000);
digitalWrite(3, LOW);
digitalWrite(1, HIGH);
delay(5000);
digitalWrite(1, LOW);

}