void setup() {
  // put your setup code here, to run once:
pinMode(12, OUTPUT);
pinMode(11,OUTPUT);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
pinMode(7, OUTPUT);
pinMode(6, OUTPUT);
pinMode(5, OUTPUT);
pinMode(4, OUTPUT);
pinMode(3, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(12, HIGH);
delay(100);
digitalWrite(12, LOW);
delay(100);

digitalWrite(11, HIGH);
delay(100);
digitalWrite(11, LOW);
delay(100);

digitalWrite(10, HIGH);
delay(100);
digitalWrite(10, LOW);
delay(100);

digitalWrite(9, HIGH);
delay(100);
digitalWrite(9, LOW);
delay(100);

digitalWrite(8, HIGH);
delay(100);
digitalWrite(8, LOW);
delay(100);

digitalWrite(7, HIGH);
delay(100);
digitalWrite(7, LOW);
delay(100);

digitalWrite(6, HIGH);
delay(100);
digitalWrite(6, LOW);
delay(100);

digitalWrite(5, HIGH);
delay(100);
digitalWrite(5, LOW);
delay(100);

digitalWrite(4, HIGH);
delay(100);
digitalWrite(4, LOW);
delay(100);

digitalWrite(3, HIGH);
delay(100);
digitalWrite(3, LOW);
delay(100);


}