int led12 = 12;
int led11 = 11;
int led10 = 10;
int led9 = 9;
int led8 = 8;
int led7 = 7;
void setup() {
  // put your setup code here, to run once:
pinMode( led12 , OUTPUT);
pinMode( led11 , OUTPUT);
pinMode( led10 , OUTPUT);
pinMode( led9 , OUTPUT);
pinMode( led8 , OUTPUT);
pinMode( led7 , OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite( led12 , HIGH);
digitalWrite( led11 , HIGH);
digitalWrite( led10 , HIGH);
digitalWrite( led9 , HIGH);
digitalWrite( led8 , HIGH);
digitalWrite( led7 , HIGH);
delay(100);
digitalWrite( led12 , LOW);
digitalWrite( led11 , LOW);
digitalWrite( led10 , LOW);
digitalWrite( led9 , LOW);
digitalWrite( led8 , LOW);
digitalWrite( led7 , LOW);
delay(100);
}