int ledPin = 7; 
int buttonGreen = 2;
int buttonRed = 3;


void setup() {
  // put your setup code here, to run once:
  pinMode(ledPin, OUTPUT);
  pinMode(buttonGreen, INPUT_PULLUP);
  pinMode(buttonRed, INPUT_PULLUP);
}

void loop() {
  // put your main code here, to run repeatedly:
  static bool state = false;
  if (digitalRead(buttonGreen) == LOW) state = HIGH;
  else if (digitalRead(buttonRed) == LOW) state = HIGH;

  if(state == LOW)
  {
    for(int x=0; x<3; x++)
    {
      digitalWrite(ledPin, HIGH);
      delay(200);
      digitalWrite(ledPin, LOW);
      delay(100);
    }

    for(int y=0; y<3; y++)
    {
      digitalWrite(ledPin, HIGH);
      delay(400);
      digitalWrite(ledPin, LOW);
      delay(100);
    }
    delay(3000);
  }
}