const int redPin = A0;
const int yellowPin = A1;
const int greenPin = A2;

void setup() {

pinMode(redPin, OUTPUT);
pinMode(yellowPin, OUTPUT);
pinMode(greenPin, OUTPUT);
      }

void loop() {

digitalWrite(redPin, HIGH);
digitalWrite(yellowPin, LOW);
digitalWrite(greenPin, LOW);
delay(2000);
         
digitalWrite(redPin, LOW);
delay(300);
digitalWrite(redPin, HIGH);
delay(300);
digitalWrite(redPin, LOW);
delay(300);
digitalWrite(redPin, HIGH);
delay(300);
digitalWrite(redPin, LOW);
delay(300);
digitalWrite(redPin, HIGH);
delay(300);


digitalWrite(redPin, LOW);
digitalWrite(yellowPin, HIGH);
digitalWrite(greenPin, LOW);
delay(3000);
      

digitalWrite(redPin, LOW);
digitalWrite(yellowPin, LOW);
digitalWrite(greenPin, HIGH);
delay(2000);


digitalWrite(greenPin, LOW);
delay(300);
digitalWrite(greenPin, HIGH);
delay(300);
digitalWrite(greenPin, LOW);
delay(300);
digitalWrite(greenPin, HIGH);
delay(300);
digitalWrite(greenPin, LOW);
delay(300);
digitalWrite(greenPin, HIGH);
delay(300);
      
      }