void setup() {
  // put your setup code here, to run once:
pinMode(10 ,OUTPUT);
pinMode(6 ,OUTPUT);
pinMode(2 ,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(10, HIGH);
digitalWrite(6, LOW);
digitalWrite(2, LOW);
delay(3600);

digitalWrite(10, LOW);
digitalWrite(6, HIGH);
digitalWrite(2, LOW);
delay(3600);

digitalWrite(10, LOW);
digitalWrite(6, LOW);
digitalWrite(2, HIGH);
delay(3600);
}