2 Syllables: SU
billiard, builder, filler, filter, Gilbert, Guilford, killer, linear, Milford, Miller, Milner, pillar, prettier, Schiller, silver, tiller, Villiers, Whittier, Wilbur, Willard
3 Syllables: USU
anterior, bewilder, exterior, familiar, inferior, interior, nonlinear, quicksilver, superior, ulterior
4 Syllables: UUSU
Found 31 words across 3 groupings. Skipped 13 excess words of a similar stem.