def test_right_inverse():
P = parse_poset('((J x W) x s) x (m x Hz)')
coords = [(1, 1), [(0, 0, 1), (1, 0), (0, 0, 0), (0, 1)]]
#print 'coords', coords
i0 = get_id_indices(P)
#print 'i0', i0
# compose
_i0coords = compose_indices(P, i0, coords, list)
#print 'i0coords', i0coords
_Q, _coords2 = transform_right_inverse(P, coords, PosetProduct)