int led = 12;

void setup(){
	pinMode (led, OUTPUT);
}
void loop(){
  //Letra S
for (int x=0; x<3; x++){
  	digitalWrite(led, HIGH);
	delay(150);
    digitalWrite(led, LOW);
  	delay(200);
}
delay(300);
  //letra O
	for (int x=0; x<3; x++){
	digitalWrite(led, HIGH);
	delay(450);
	digitalWrite(led, LOW);
	delay(200);
}
delay(150);
  //Letra S
  	for (int x=0; x<3; x++){
  	digitalWrite(led, HIGH);
	delay(150);
    digitalWrite(led, LOW);
  	delay(200);
}
//espera para volver a comenzar
delay(2500);
}