void setup() {
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(3,INPUT);
  pinMode(4,INPUT);
  pinMode(2,INPUT);
      digitalWrite(12, LOW); 
}

void loop() {
  if (digitalRead(2) == HIGH && digitalRead(3) == HIGH) {
  digitalWrite(12, HIGH); 
  } else {
  digitalWrite(12, LOW);
  }

  if (digitalRead(2) == HIGH && digitalRead(4) == HIGH) {
  digitalWrite(13, HIGH); 
  } else {
  digitalWrite(13, LOW);
  }

  if (digitalRead(3) == HIGH && digitalRead(4) == HIGH) {
  digitalWrite(11, HIGH); 
  } else {
  digitalWrite(11, LOW);
  }

}