2 Syllables: SU
histories
3 Syllables: SUU
fisheries, infamy, infancy, infantry, instantly, liveries, miseries, mysteries, Philippines, Philistines, Pyrenees, similes, stringency, symphonies, symphony, tyrannies, vicarage
3 Syllables: USU
deliveries
4 Syllables: USUU
abilities, affinities, antipathies, antipodes, antiquities, civilities, conspiracies, contingencies, contingency, delinquencies, delinquency, divinities, facilities, festivities, hostilities, proclivities, utilities
5 Syllables: UUSUU
aborigines, capabilities, disabilities, liabilities, possibilities, probabilities
6 Syllables: UUUSUU
impossibilities, responsibilities, susceptibilities

Found 45 words across 6 groupings.