#define pinKey  11
const int pinRed = 7;
const int pinYellow = 6;
const int pinGreen = 5;
void setup() {
  pinMode(pinRed, OUTPUT);
  pinMode(pinYellow, OUTPUT);
  pinMode(pinGreen, OUTPUT);
  pinMode(pinKey, INPUT_PULLUP);

}

void loop() {
if(digitalRead(pinKey) == LOW){
  digitalWrite(pinRed, HIGH);
  digitalWrite(pinYellow, LOW);
  delay(10000);
  digitalWrite(pinRed, LOW);
  digitalWrite(pinYellow, HIGH);
  delay(6000);
  digitalWrite(pinYellow, LOW);
  digitalWrite(pinGreen, HIGH);
  delay(10000);
  digitalWrite(pinGreen, LOW);
  }
}