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

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13, HIGH);
tone(13,395,300);
delay(100);
digitalWrite(13, LOW);
tone(13,395,300);
delay(100);
digitalWrite(12, HIGH);
tone(12,349,200);
delay(100);
digitalWrite(12, LOW);
tone(12,349,200);
delay(100);
digitalWrite(10, HIGH);
tone(10,330,400);
delay(100);
digitalWrite(10, LOW);
tone(10,330,400);
delay(100);
digitalWrite(9, HIGH);
tone(9,294,300);
delay(100);
digitalWrite(9, LOW);
tone(9,294,300);
delay(100);
}