2 Syllables: SU
billow, brimstone, ditto, hero, impost, Indo, inflow, info, inmost, inroad, intro, kinsfolk, limbo, Nero, pillow, primrose, syndrome, widow, willow, window, Winslow
3 Syllables: USU
Found 24 words across 2 groupings. Skipped 2 excess words of a similar stem.