2 Syllables: SU
blushes, buttons, clutches, cousins, customs, dozens, Duchess, justice, Justus, loveliest, luggage, lustrous, ovens, Prussians, roughest, roughness, rushes, Russians, summons, tonnage, touches, toughest, toughness, uplands
3 Syllables: USU
4 Syllables: UUSU
Found 31 words across 3 groupings. Skipped 2 excess words of a similar stem.