void setup() {
  // put your setup code here, to run once:
// pinMode(13, OUTPUT);
// pinMode(12, OUTPUT);
// pinMode(11, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
// digitalWrite(13,1);
// delay(5000);
// digitalWrite(13,0);
// digitalWrite(12,1);
// delay(5000);
// digitalWrite(12,0);
// digitalWrite(11,1);
// delay(5000);
// digitalWrite(11,0);
}