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

for(int i=2;i<10;i++)
  pinMode(i, OUTPUT);


}

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

for(int i=2;i<10;i++)
  digitalWrite(i, HIGH);
  delay(1000);

  for(int i=2;i<10;i++)
  digitalWrite(i, LOW);
  delay(1000);


}