Or search: ra, re, ana, lug, pean, lugh, augur, humor, paean, relic, sibyl, stela, stele, circus, galley
2 Syllables: SU
histories
3 Syllables: SUU
bigotry, dignities, dignity, fisheries, liveries, miseries, mysteries, Philippines, Philistines, Pyrenees, rickety, similes, tyrannies, vicarage
3 Syllables: USU
deliveries
4 Syllables: USUU
abilities, acidity, affinities, antipathies, antipodes, antiquity, civilities, conspiracies, deliberately, divinities, facilities, festivities, fluidity, hostilities, humidity, indignities, indignity, morbidity, predictably, proclivities, rapidity, rigidity, solidity, timidity, utilities
5 Syllables: UUSUU
aborigines, capabilities, disabilities, liabilities, possibilities, probabilities
6 Syllables: UUUSUU
impossibilities, responsibilities, susceptibilities

Found 50 words across 6 groupings.