3 Syllables: SUU
denison, edison, evidenced, harrison, harrison's, hesitant, merriment, negligence, negligent, penitence, precedent, president, president's, residence, resident, reticence, reticent, sheridan, tennyson
4 Syllables: USUU
5 Syllables: UUSUU
Found 23 words across 3 groupings. Skipped 2 excess words of a similar stem.