int i;
void setup() {                
  // initialize the digital pin as output.
  for(i=2;i<10;i++)
 {
  pinMode(i, OUTPUT);  
 }   
}

void loop() {
  for(i=2;i<10;i++)
 {
  digitalWrite(i, HIGH);   // set the LED on
  delay(100);              // wait for a second
  digitalWrite(i, LOW);    // set the LED off
 }
}