Or search: scotland, archipelago
3 Syllables: SUU
charities, rarities, technically
4 Syllables: USUU
aesthetically, celebrities, celebrity, complexities, complexity, electrically, genetically, hermetically, necessities, pathetically, perceptibly, perplexities, poetically, severities, symmetrically
5 Syllables: UUSUU
alphabetically, diametrically, energetically, geometrically, imperceptibly, parenthetically, sympathetically, theoretically, unexpectedly
6 Syllables: UUUSUU
apologetically

Found 28 words across 4 groupings.