Using nauty where the result has a singleton anywhere in the result gives 
an incorrectly segmented return. Below are some examples

1 possible construction:
sage: tuple(hypergraphs.nauty(2, 3, uniform=2))
(((0, 1), (0, 2)),)

1 edge
sage: tuple(hypergraphs.nauty(1, 2, uniform=2))
(((0, 1),),)

1 uniform case
sage: tuple(hypergraphs.nauty(2, 2, uniform=1))
(((0,), (1,)),)

everything together
sage: tuple(hypergraphs.nauty(1, 1, uniform=1))
(((0,),),)

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