2 Syllables: SU
Belgian, Belgium, bellum, Cheltenham, dwelling, Elgin, Ellen, felling, felon, Helen, Helen's, helping, melon, melting, Melvin, Nelson, Nelson's, Pelham, pelting, Selden, seldom, selling, Sheldon, shelling, shelving, smelling, smelting, spelling, swelling, telling, twelvemonth, vellum, welcome, welding, welling, Wesleyan, yelling
3 Syllables: USU
compelling, dispelling, excelling, expelling, foretelling, impelling, indwelling, Magellan, propelling, rebelling, rebellion, repellent, repelling, unwelcome
4 Syllables: UUSU
Found 53 words across 3 groupings. Skipped 8 excess words of a similar stem.