2 Syllables: SU
billing, billion, brilliance, brilliant, building, children, children's, chilling, Dillon, drilling, filling, gilding, Hilton, ilium, killing, Lillian, milking, milling, million, Milton, pilgrims, shilling, silken, spilling, sylvan, thrilling, tilings, tilling, tilting, villain, Wilkins, William, willing, Wilson, Wilson's, Wilton
3 Syllables: USU
Bouillon, Brazilian, Castilian, civilian, distilling, fulfilling, fulfillment, fulfilment, instilling, Macmillan, pavilion, rebuilding, resilience, resilient, Sicilian, unwilling, vermilion
4 Syllables: UUSU
Maximilian
Found 54 words across 3 groupings. Skipped 11 excess words of a similar stem.