Executor service порядок начала выполнения тасков

public class Main {
 
    public static void main(String[] args) throws InterruptedException {
        ExecutorService executorService = Executors.newFixedThreadPool(10);
        List<Integer> first = new ArrayList<>();
        List<Integer> second = new ArrayList<>();
        fill(first, 0, 3);
        fill(second, 40, 100);
        CompletableFuture.runAsync(() -> wait(executorService, second));
        CompletableFuture.runAsync(() -> wait(executorService, first));
        sleep(500000);
    }
 
    private static void wait(ExecutorService executorService, List<Integer> fromOTo20) {
        List<? extends Future<?>> futures = submitTasks(fromOTo20, executorService);
        Awaitility.await().atMost(15, TimeUnit.MINUTES).until(() -> futures.stream().allMatch(Future::isDone));
        System.out.println(fromOTo20);
    }
 
    private static void fill(List<Integer> fromOTo20, int from, int to) {
        for (int i = from; i < to; i++) {
            fromOTo20.add(i);
        }
    }
 
    public static List<? extends Future<?>> submitTasks(List<Integer> ids, ExecutorService executorService) {
        return ids.stream()
                .map(integer -> executorService.submit(new Task()))
                .collect(Collectors.toList());
    }
 
 
}

public class Task implements Runnable {
 
    @SneakyThrows
    @Override
    public void run() {
 
        Thread.sleep(new Random().nextInt(1500));
    }
}