void setup() {
  // put your setup code here, to run once:
  pinMode (2, OUTPUT);
  pinMode (0, OUTPUT);
  pinMode (4, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(2, HIGH);
  delay(50);
  digitalWrite(2, LOW);
  delay(50);
  
   digitalWrite(0, HIGH);
  delay(50);
  digitalWrite(0, LOW);
  delay(50);
  
  
   digitalWrite(4, HIGH);
  delay(50);
  digitalWrite(4, LOW);
  delay(40);
  

}