void setup() {
  // put your setup code here, to run once:
  int red=3;
  int yellow=6;
  int green=8;
  pinMode(red, OUTPUT); //red
  pinMode(yellow, OUTPUT); //yellow
  pinMode(green, OUTPUT); //green

}

void loop() {
  // put your main code here, to run repeatedly:
int red=3;
int yellow=6;
int green=8;
digitalWrite(red, HIGH); 
delay(5000);
digitalWrite(red, LOW);
delay(1000);
digitalWrite(yellow, HIGH); 
delay(500);
digitalWrite(yellow, LOW);
delay(500);
digitalWrite(yellow, HIGH);
delay(500);
digitalWrite(yellow, LOW);
delay(500);
digitalWrite(yellow, HIGH);
delay(500);
digitalWrite(yellow, LOW);
delay(500);
digitalWrite(green, HIGH); 
delay(4000);
digitalWrite(green, LOW);
delay(1000);

}