def group_equal(els):
    result = []
    current = []
    for element in els:
        if len(current) == 0 or element in current:
            current.append(element)
        else:
            result.append(current)
            current = [element]
    if len(current) != 0:
        result.append(current)
    return result


if __name__ == '__main__':
    print("Example:")
    print(group_equal([1, 1, 4, 4, 4, "hello", "hello", 4]))

    # These "asserts" are used for self-checking and not for an auto-testing
    assert group_equal([1, 1, 4, 4, 4, "hello", "hello", 4]) == [[1, 1], [4, 4, 4], ["hello", "hello"], [4]]
    assert group_equal([1, 2, 3, 4]) == [[1], [2], [3], [4]]
    assert group_equal([1]) == [[1]]
    assert group_equal([]) == []
    print("Coding complete? Click 'Check' to earn cool rewards!")