void setup() {
  Serial.begin(115200);  
  // initialize the pushbutton pin as an input
  //pinMode(buttonPin, INPUT);
  // initialize the LED pin as an output
  pinMode(2, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(4, OUTPUT);
}

void loop() {
  // read the state of the pushbutton value
  //buttonState = digitalRead(buttonPin);
  //Serial.println(buttonState);
  // check if the pushbutton is pressed.
  // if it is, the buttonState is HIGH
  //if (buttonState == HIGH) {
    // turn LED on
    digitalWrite(5, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(2, LOW);
    delay(3000);
    digitalWrite(4, HIGH);
    digitalWrite(5, LOW);
    digitalWrite(2, LOW);
    delay(1000);
    digitalWrite(2, HIGH);
    digitalWrite(5, LOW);
    digitalWrite(4, LOW);
    delay(3000);

}