int botonPin1 = 2;
int botonPin2 = 3;
int botonPin3 = 4;
int botonPin4 = 5;
int ledPin1 = 6;
int ledPin2 = 7;
int buzzPin1 = 8;
int buzzPin2 = 9;

void runSequence(int duration, int pin1, int pin2) {
  digitalWrite(pin1, HIGH);
  digitalWrite(pin2, HIGH);
  delay(duration);
  digitalWrite(pin1, LOW);
  digitalWrite(pin2, LOW);
  delay(duration);
}

void setup() {

  pinMode(botonPin1, INPUT);
  pinMode(botonPin2, INPUT);
  pinMode(botonPin3, INPUT);
  pinMode(botonPin4, INPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buzzPin1, OUTPUT);
  pinMode(buzzPin2, OUTPUT);
}

void loop() {
  if (digitalRead(botonPin1) == HIGH) {
    runSequence(500, ledPin1, ledPin2);
    delay(100); // 
  }

  if (digitalRead(botonPin2) == HIGH) {
    runSequence(500, buzzPin1, buzzPin2);
    delay(100);
  }
  
  if (digitalRead(botonPin3) ==  HIGH || digitalRead(botonPin4) ==  HIGH) {
    runSequence(500, ledPin1, buzzPin1);
    runSequence(500, ledPin2, buzzPin2);
    delay(100); 
  }
  
  if (digitalRead(botonPin3) ==  HIGH && digitalRead(botonPin4) == HIGH) {
    runSequence(300, ledPin2, buzzPin1);
    runSequence(300, ledPin1, buzzPin2);
    delay(100); 
  }
}