int Green = 13;
int Yellow = 12;
int Red = 11;

void setup() {
  // put your setup code here, to run once:
pinMode(Green, OUTPUT);
pinMode(Yellow, OUTPUT);
pinMode(Red, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(Green, HIGH);
digitalWrite(Yellow, LOW);
digitalWrite(Red, LOW);
delay(5000);

for (int i = 0; i < 5; i = i+1) {
digitalWrite(Green, LOW);
digitalWrite(Yellow, HIGH);
digitalWrite(Red, LOW);
delay(500);
digitalWrite(Yellow, LOW);
delay(500);

}

digitalWrite(Green, LOW);
digitalWrite(Yellow, LOW);
digitalWrite(Red, HIGH);
delay(5000);
}