void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(27,OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(26,OUTPUT);
}



void loop() {
  digitalWrite(27, HIGH);
  digitalWrite(14, LOW);
  digitalWrite(26, LOW);
  delay(2000);
  digitalWrite(26, LOW);
  digitalWrite(14, HIGH);
  digitalWrite(27, LOW);
  delay(2000);
  digitalWrite(26, HIGH);
  digitalWrite(14, LOW);
  digitalWrite(27, LOW);
  delay(2000);
}