2 Syllables: SU
biscuit, Bishop, Bridget, civic, digit, district, drifted, frigid, gifted, listed, livid, mystic, mythic, physic, pivot, rhythmic, Richmond, rigid, rivet, shifted, sifted, twisted, visit, vivid
3 Syllables: USU
Archbishop, artistic, assisted, consisted, desisted, elicit, enlisted, existed, explicit, illicit, implicit, initiates, insisted, linguistic, Pacific, persisted, prolific, realistic, resisted, revisit, simplistic, solicit, specific, statistic, stylistic, subsisted, terrific
4 Syllables: UUSU
altruistic, atheistic, Calvinistic, communistic, fatalistic, hieroglyphic, humanistic, idealistic, journalistic, logarithmic, mechanistic, metaphysics, monolithic, nationalistic, naturalistic, optimistic, pessimistic, rationalistic, scientific, socialistic, unassisted, unrealistic
5 Syllables: UUUSU
6 Syllables: UUUUSU
7 Syllables: UUUUUSU
Found 82 words across 6 groupings. Skipped 16 excess words of a similar stem.