void setup() {
  for (int j = 0; j <= 12; j++) {
    pinMode(j, OUTPUT);
  }

}
void loop() {
  for (int j = 0; j <= 12; j++) {
    for (int i = 0; i <= 12; i++) {
      digitalWrite(i, LOW);
    }
    digitalWrite(j, HIGH);
    delay(150);
  }
}