#define led1 1
#define led2 2
#define led3 3

void setup() {
  pinMode(4, INPUT);
  pinMode(5, INPUT);
  pinMode(6, INPUT);

  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);

}

void loop() {
  byte button1 = digitalRead(4);
  byte button2 = digitalRead(5);
  byte button3 = digitalRead(6);

  if (button1 == 1) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    delay(200);
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    delay(200);
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, HIGH);
    delay(200);
    delay(200); //debounce

  }
  else if (button2 == 1) {
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, HIGH);
    delay(200);
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    delay(200);
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    delay(200);
    delay(200); //debounce
    
  }

  else if (button3 == 1) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, HIGH);
    delay(200);
    digitalWrite(led1, LOW);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
    delay(200);
    delay(200); //debounce

  }

}