2 Syllables: SU
3 Syllables: SUU
cinnamon, immanent, imminence, imminent, implement, impotence, impotent, impudence, impudent, incidence, incident, increment, indolence, indolent, inference, insolence, insolent, instrument, insulin, lineaments, minimum, simpleton, stimulant
4 Syllables: USUU
Found 25 words across 3 groupings. Skipped 4 excess words of a similar stem.