3 Syllables: SUU
daintily, faithfully, fatally, favorably, functionally, gracefully, gratefully, hastily, nationally, painfully, playfully, racially, rationally, shamefully, specialty, tastefully
4 Syllables: SUUU
criminally, favourably, marginally, nominally, personally
4 Syllables: USUU
conditionally, disdainfully, exceptionally, originally, proportionally, provisionally, traditionally
5 Syllables: USUUU
Additionally, conventionally, diagonally, intentionally, occasionally, professionally, unfavorably, unfavourably
5 Syllables: UUSUU
unconditionally, unintentionally
6 Syllables: UUSUUU
constitutionally, longitudinally

Found 40 words across 6 groupings.