void setup() {
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(6, OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(2, HIGH);
  delay(5000);
  digitalWrite(2, LOW);

  digitalWrite(4, HIGH);
  delay(5000);
  digitalWrite(4, LOW);

  digitalWrite(6, HIGH);
  delay(5000);
  digitalWrite(6, LOW);
  // put your main code here, to run repeatedly:

}