void setup() {
  delay(1000);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);

}

void loop() {
  delay(1000);
  digitalWrite(2,0);
  digitalWrite(3,1);
  digitalWrite(4,0);
  digitalWrite(5,1);
  digitalWrite(6,0);
  digitalWrite(7,1);
  digitalWrite(8,0);
  digitalWrite(9,1);

}