void setup() {
  // put your setup code here, to run once:
pinMode(13, OUTPUT);
pinMode(10, OUTPUT);
pinMode(7, OUTPUT);
pinMode(5, OUTPUT);
pinMode(12, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13, HIGH);
digitalWrite(10, LOW);
digitalWrite(7, LOW);
digitalWrite(5, LOW);
tone(12, 1000);
delay(500);
digitalWrite(13, LOW);
digitalWrite(10, HIGH);
digitalWrite(7, LOW);
digitalWrite(5, LOW);
tone(12, 700);
delay(500);
digitalWrite(13, LOW);
digitalWrite(10, LOW);
digitalWrite(7, HIGH);
digitalWrite(5, LOW);
tone(12, 500);
delay(500);
digitalWrite(13, LOW);
digitalWrite(10, LOW);
digitalWrite(7, LOW);
digitalWrite(5, HIGH);
tone(12, 300);
delay(500);
}