Or search: unfree, grammar, qualified, classified, circumscribed
2 Syllables: SU
bigot, cricket, critic, cryptic, fitted, flitted, frigate, gibbet, Ibid, idiot, knitted, liquid, mitted, picket, picnic, pitted, quitted, rickets, signet, thicket, ticket, wicked, wicket, witted
3 Syllables: USU
acquitted, addicted, admitted, afflicted, befitted, committed, conflicted, constricted, convicted, deliberate, depicted, emitted, evicted, exhibit, inflicted, inhibit, insipid, omitted, permitted, predicted, prohibit, remitted, Semitic, submitted, transmitted, unfitted
4 Syllables: UUSU
analytic, catalytic, contradicted, impolitic, paralytic, parasitic, unrestricted
5 Syllables: UUUSU
apocalyptic, electrolytic
6 Syllables: UUUUSU
psychoanalytic

Found 60 words across 5 groupings. Skipped 14 excess words of a similar stem.