void setup() {
  // put your setup code here, to run once:
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
For { (pin = 2 ; pin < 10; pin = pin + 1);
}
digitalWrite ( 2, HIGH);
delay (500);
digitalWrite (2, LOW);
delay(500);
}