void setup() 
{pinMode(12, OUTPUT);
pinMode(14, OUTPUT);
pinMode(27, OUTPUT);
}

void loop()
 {digitalWrite(12, HIGH);
 delay(500);
 digitalWrite(12, LOW);
 delay(500);
 digitalWrite(14, HIGH);
 delay(500);
 digitalWrite(14, LOW);
 delay(500);
 digitalWrite(27, HIGH);
 delay(500);
 digitalWrite(27, LOW);
 delay(1000);
 
}