void setup(){
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(14, OUTPUT);
}
void loop(){
  digitalWrite(12, HIGH);
  delay(2000);
  digitalWrite(12, LOW);
  delay(5000);
  digitalWrite(13, HIGH);
  delay(2000);
  digitalWrite(13, LOW);
  delay(3000);
  digitalWrite(7, HIGH);
  delay(2000);
  digitalWrite(7, LOW);
  delay(2000);
}