const int a =  D0;   // the number of the LED pin
const int b =  D1; 
const int c = 25;
const int d =  26; 
const int e = 27;
const int f =  4; 
const int g = 5;
// variable for storing the pushbutton status 
//int buttonState = 0;

void setup() {
  Serial.begin(115200);  
  // initialize the pushbutton pin as an input
  //pinMode(buttonPin, INPUT);
  // initialize the LED pin as an output
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(yellow, OUTPUT);pinMode(red, OUTPUT);
  pinMode(green, 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(red, HIGH);
    digitalWrite(green, LOW);
     digitalWrite(yellow, LOW);
    Serial.println("RED");
  
    delay(10000);
  //} else {
    // turn LED off
    digitalWrite(red, LOW);
    digitalWrite(green, HIGH);
    digitalWrite(yellow, LOW);
    Serial.println("GREEN");
    delay(10000);
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
     digitalWrite(yellow, HIGH);
    Serial.println("YELLOW");
  
    delay(3000);
  }