Or search: vizor, beaver, casque, heaume, salade, sallet, basinet, cabasset, cataphract
2 Syllables: SU
belted, deadliest, eldest, Eliot, Eliot's, Elliot, Elliott, helmet, helpless, melted, pellets, pelvis, selfless, velvet, wealthiest, zealots
3 Syllables: USU
develop, develope, develops, envelop, rebellious
4 Syllables: UUSU
undeveloped
5 Syllables: UUUSU
underdeveloped

Found 23 words across 4 groupings. Skipped 3 excess words of a similar stem.