def test_pair_2():
    assert_equal(
        [('0', ['1']),
         ('2', ['3']),
         ('4', ['5'])],
        utilities.__pair(['0', '1', '2', '3', '4', '5'], 2)
    )
def test_pair_1():
    assert_equal(
        [('0', ['1']),
         ('1', ['2']),
         ('2', ['3']),
         ('3', ['4']),
         ('4', ['5']),
         ('5', [])],
        utilities.__pair(['0', '1', '2', '3', '4', '5'], 1)
    )
def test_pair_3():
    assert_equal(
        [('0', ['1', '2']),
         ('3', ['4', '5'])],
        utilities.__pair(['0', '1', '2', '3', '4', '5'], 3)
    )
def test_pair_0():
    assert_equal(
        [('0', ['1', '2', '3', '4', '5'])],
        utilities.__pair(['0', '1', '2', '3', '4', '5'], 0)
    )
def test_pair_5():
    assert_equal(
        [('0', ['1', '2', '3', '4']),
         ('5', [])],
        utilities.__pair(['0', '1', '2', '3', '4', '5'], 5)
    )