2 Syllables: SU
bison, Brian, brighten, Brighton, Bryan, Bryant, Byron, Byron's, client, diamond, Dryden, fireman, firemen, frighten, giant, guidance, heighten, Highland, Hiram, Iceland, ion, Ireland, island, item, Ivan, Leiden, Leyden, licence, license, lichen, lighten, liken, lion, Lyman, Lyon, migrant, pliant, ripen, Ryan, science, scion, Sidon, silence, silent, Simon, Simon's, sion, siren, stipend, strident, tighten, tiresome, Titan, trident, triumph, tyrant, viands, vibrant, violence, violent, widen, Zion
3 Syllables: SUU
3 Syllables: USU
acquirement, alliance, appliance, asylum, atheism, compliance, compliant, connivance, contrivance, defiance, defiant, enlighten, enliven, environ, Hawaiian, horizon, Orion, reliance, reliant, requirement, retirement, subsidence, unlicensed
4 Syllables: USUU
4 Syllables: UUSU
Found 92 words across 5 groupings. Skipped 43 excess words of a similar stem.