void loop()
                  {
                    digitalWrite(azul, HIGH);
                    digitalWrite(naranja, HIGH);
                    digitalWrite(verde, LOW);
                    digitalWrite(rojo, LOW);
                    delay(5000);
                    digitalWrite(azul, LOW);
                    digitalWrite(naranja, LOW);
                    digitalWrite(verde, HIGH);
                    digitalWrite(rojo, HIGH);
                    delay(5000);
                  }