2 Syllables: SU
abbess, active, Agnes, axes, Bacchus, baggage, Baptist, blackish, blacksmith, brackish, cabbage, captive, lactic, lapses, package, Papists, practice, practise, Radcliffe, satis, tactic, taxes, trackless, waxes
3 Syllables: USU
adaptive, attractive, collapses, combative, didactic, establish, inactive, reactive, refractive, relapses, relaxes
4 Syllables: UUSU
5 Syllables: UUUSU
Found 40 words across 4 groupings. Skipped 7 excess words of a similar stem.