const int LED_PINS[] = {3, 5, 6, 9, 10};
int delayValue        = 1000;

void setup() {
  pinMode(LED_PINS[0], OUTPUT);
  pinMode(LED_PINS[1], OUTPUT);
  pinMode(LED_PINS[2], OUTPUT);
  pinMode(LED_PINS[4], OUTPUT);
  pinMode(LED_PINS[5], OUTPUT);
}

void loop() {
  digitalWrite(LED_PINS[0], HIGH);
  digitalWrite(LED_PINS[2], HIGH);
  digitalWrite(LED_PINS[4], HIGH);

  digitalWrite(LED_PINS[1], LOW);
  digitalWrite(LED_PINS[3], LOW);

  delay(delayValue);

  digitalWrite(LED_PINS[0], LOW);
  digitalWrite(LED_PINS[2], LOW);
  digitalWrite(LED_PINS[4], LOW);

  digitalWrite(LED_PINS[1], HIGH);
  digitalWrite(LED_PINS[3], HIGH);

  delay(delayValue);
}