void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(14, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(16, OUTPUT);
  
}

void loop() {
  digitalWrite(14, HIGH);
  digitalWrite(19, HIGH);
  delay(1000);
  digitalWrite(14, LOW);
  digitalWrite(19, LOW);
  delay(100);

   

  digitalWrite(21, HIGH);
  digitalWrite(18, HIGH);
  delay(1000);
  digitalWrite(21, LOW);
  digitalWrite(18, LOW);
  delay(500);

  

  digitalWrite(2, HIGH);
  digitalWrite(16, HIGH);
  delay(1000);
  digitalWrite(2, LOW);
  digitalWrite(16, LOW);
  delay(1000);

  digitalWrite(21, HIGH);
  digitalWrite(18, HIGH);
  delay(2000);
  digitalWrite(21, LOW);
  digitalWrite(18, LOW);
  delay(100);
 
  
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation

}