const int ledPins[] = {8, 9, 10};  // Pins for 3 LEDs

void setup() {
  for (int i = 0; i < 3; i++) {
    pinMode(ledPins[i], OUTPUT);  // Initialize each LED pin as output
  }
}

void loop() {
  for (int i = 0; i < 10; i++) {
    for (int j = 0; j < 3; j++) {
      digitalWrite(ledPins[j], HIGH);  // Turn each LED on one by one
      delay(500);                      // Wait for 500 milliseconds
      digitalWrite(ledPins[j], LOW);   // Turn the LED off
    }
  }

  while (true);  // Stop after sequence
}