int redLed = 2;
int yellowLed = 4;
int greenLed = 6;
void setup() {
  pinMode(redLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(greenLed, OUTPUT);

}

void loop() {

  digitalWrite(redLed, HIGH);
  delay(1000);
  digitalWrite(yellowLed, HIGH);
  delay(1000);
  digitalWrite(greenLed, HIGH);
  delay(1000);
  digitalWrite(greenLed, LOW);
  delay(1000);
  digitalWrite(yellowLed, LOW);
  delay(1000);
  digitalWrite(redLed, LOW);
  delay(1000);

  for(int i=0; i<5; i++){
    digitalWrite(redLed, HIGH);
    digitalWrite(yellowLed, HIGH);
    digitalWrite(greenLed, HIGH);
    delay(1000);
    digitalWrite(redLed, HIGH);
    digitalWrite(yellowLed, HIGH);
    digitalWrite(greenLed, HIGH);
    delay(1000);
  }

}