void setup() {
  int(7,OUTPUT);
  int(8,OUTPUT);
  int(2,OUTPUT);
  //PinMode(7,OUTPUT);
  //pinMode(8, OUTPUT);
  //PinMode(2,OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(7, HIGH);
  delay(100);
  digitalWrite(7, LOW);
  delay(100);
  digitalWrite(8, HIGH);
  delay(100);
  digitalWrite(8, LOW);
  delay(100);
  digitalWrite(2, HIGH);
  delay(100);
  digitalWrite(2, LOW);
  delay(100);

  // put your main code here, to run repeatedly:

}