1 Syllable: S
12, Bel, bell, Belle, bells, belt, cell, Celts, dealt, del, dell, delle, delve, dwell, dwelt, Elbe, eld, elf, elk, ell, elle, elm, else, elves, fell, felt, gel, health, held, hell, hell's, helm, help, knell, knelt, L, Mel, mell, melt, nel, Nell, pell, pelt, Phelps, quell, realm, sel, self, sell, selves, shelf, shell, shelved, shelves, smell, smelt, spell, spelt, swell, tell, twelfth, twelve, wealth, Welch, weld, well, Welsh, Welt, yell
2 Syllables: SU
Carmel, Michel, Raphael, rebel, yourself
2 Syllables: US
befell, beheld, cartel, Chapelle, chiselled, compel, compelled, compels, Cornell, dispel, dispelled, excel, excelled, excels, expel, expelled, farewell, foretell, gazelle, herself, himself, hotel, impel, impelled, impels, intel, itself, Manuel, Marcel, marvelled, Miguel, myself, Nobel, Noel, Nouvelle, oneself, ourselves, propel, propelled, rebelled, repel, repelled, repels, Rochelle, themselves, thyself, unwell, upheld, withheld
3 Syllables: UUS
4 Syllables: UUUS

Found 128 words across 5 groupings. Skipped 33 excess words of a similar stem.