void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}
digitalWrite(2,1);
delay(dt);
digitalWrite(3,1);
delay(dt);
digitalWrite(4,1);
delay(dt);
digitalWrite(5,1);
delay(dt);
digitalWrite(6,1);
delay(dt);
digitalWrite(7,1);
digitalWrite(8,1);
delay(dt);
digitalWrite(9,1);
delay(dt);
digitalWrite(9,0);
delay(dt);
digitalWrite(8,0);
delay(dt);