2 Syllables: SU
abbess, active, Agnes, Atkins, axes, Bacchus, baggage, Baptist, blackish, blacksmith, brackish, cabbage, captive, happenings, lapses, napkins, package, Papists, practice, practise, Radcliffe, satis, taxes, trackless
3 Syllables: USU
adaptive, attractive, collapses, combative, establish, inactive, reactive, refractive, relapses, relaxes
4 Syllables: UUSU
5 Syllables: UUUSU
Found 38 words across 4 groupings. Skipped 7 excess words of a similar stem.