void setup() {
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
}

void loop() {
  analogWrite(13, 255);
  analogWrite(12, 0);
  analogWrite(11, 0);
  delay(1000); // Wait for 1000 millisecond(s)
  analogWrite(13, 255);
  analogWrite(12, 255);
  analogWrite(11, 102);
  delay(1000); // Wait for 1000 millisecond(s)
  analogWrite(13, 0);
  analogWrite(12, 255);
  analogWrite(11, 255);

}