void setup() {
  // put your setup code here, to run
  pinMode (10, OUTPUT) ; 
  pinMode (9, OUTPUT) ; 
  pinMode (2, OUTPUT);
   pinMode (10, OUTPUT);
}
void loop() {
   // put your main code here, to run
   digitalWrite(10, HIGH);
   tone (10, 500);
   delay (1000); 
   noTone (10 );
   digitalWrite(10, LOW);
   delay (50);
   digitalWrite(9, HIGH);
   delay (1500);
   digitalWrite(9, LOW);
   delay (50);
   digitalWrite(2, HIGH);
   delay (3000);
   digitalWrite(2, LOW);
   delay (50);
   digitalWrite(9, HIGH);
   delay (1500);
   digitalWrite(9, LOW);
   delay (50);
}