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2 Syllables: SU
button, buxom, Buxton, duction, Dutton, glutton, Hudson, Hutton, mutton, Putnam, Putnam's, Rutland, substance, suction, sudden, suppliant, Sutton, twopence, upland, Upton
3 Syllables: USU
4 Syllables: UUSU

Found 44 words across 3 groupings. Skipped 15 excess words of a similar stem.