2 Syllables: SU
Benson, Bentham, Benton, Bingham, Bremen, Clemens, Clement, Clinton, crimson, emblem, engines, England, England's, ensign, entrance, Fenton, Finland, hindrance, income, Indian, infant, Ingram, instance, instant, interim, Jenkins, Jensen, Kenyon, kingdom, Kingston, kinsmen, lemon, lengthen, Lenin, Lincoln, Lincoln's, Linden, linen, mention, minion, penance, penchant, pendant, pendent, Penguin, pennant, pension, pinion, Plenum, Princeton, remnant, semblance, sentence, sentient, Simeon, Simmons, Simpson, strengthen, stringent, Symonds, symptom, temperance, tenant, tendon, tension, trenchant, Trenton, vengeance, venom, Winston, women, women's, Wyndham
3 Syllables: SUU
3 Syllables: USU
abstention, amendment, ascendant, ascension, astringent, attendance, attendant, attention, commencement, compendium, contention, contentment, contingent, convention, Corinthian, Darwinian, declension, defendant, delinquent, dependant, dependence, dependent, descendant, detention, dimension, dissension, distinction, dominion, entrenchments, exemption, extension, extinction, infringement, intention, invention, Justinian, Lieutenant, millennium, momentum, Olympian, opinion, presentment, pretension, prevention, redemption, remembrance, repentance, repentant, resemblance, resentment, resplendent, retention, retrenchment, suspension, transcendence, transcendent, Virginian
4 Syllables: UUSU
apprehension, comprehension, condescension, contravention, hypertension, inattention, independence, independent, intervention, referendum
5 Syllables: UUUSU
contradistinction, interdependence, interdependent, misapprehension, superintendence, superintendent
Found 147 words across 5 groupings. Skipped 58 excess words of a similar stem.