void setup() {
  // put your setup code here, to run once:
for(int LED =2; LED <=13 ; LED++) {
pinMode (LED, OUTPUT);
}
}
void loop() {
  // put your main code here, to run repeatedly:
for(int LED =2; LED <=13 ; LED++) {
digitalWrite (LED, HIGH );
delay(1000);
digitalWrite (LED, LOW );
}
}