2 Syllables: SU
acid, affix, avid, Bassett, blasted, Catholic, classic, drafted, drastic, fasted, gastric, grafted, graphic, Hazlitt, lasted, magic, placid, plastic, tacit, traffic, tragic
3 Syllables: USU
bombastic, dynastic, elastic, engrafted, fantastic, geographic, gymnastic, monastic, sarcastic, scholastic, thoracic
4 Syllables: UUSU
5 Syllables: UUUSU
Found 40 words across 4 groupings. Skipped 6 excess words of a similar stem.