4 Syllables: SUUU
celebrating, decorating, deprecating, desolating, devastating, educating, elevating, emanating, emigrating, enervating, estimating, generating, hesitating, liberating, meditating, moderating, operating, penetrating, separating, tolerating
5 Syllables: USUUU
accelerating, ameliorating, collaborating, commemorating, cooperating, deliberating, deteriorating, disseminating, elaborating, enumerating, evaporating, exaggerating, exasperating, exhilarating, inaugurating, incorporating, investigating, invigorating, obliterating, perpetuating, regenerating, reiterating
Found 42 words across 2 groupings.