void setup() 
{
  Serial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(14, OUTPUT); //Red
  pinMode(27, OUTPUT); //Yellow
  pinMode(26, OUTPUT); //Green
}

void loop()
{
  digitalWrite(26, HIGH);
  delay(3000);
  digitalWrite(26, LOW);
  digitalWrite(27, HIGH);
  delay(1000);
  digitalWrite(27, LOW);
  digitalWrite(14, HIGH);
  delay(5000);
  digitalWrite(14, LOW);
}