# Write a function to extract all the adjacent coordinates of the given coordinate tuple.
def adjac(ele, sub=[]):
    if not ele:
        yield sub
    else:
        yield from [
            idx
            for j in range(ele[0] - 1, ele[0] + 2)
            for idx in adjac(ele[1:], sub + [j])
        ]


def get_coordinates(test_tup):
    res = list(adjac(test_tup))
    return res
