Or search: shrewd, scheming, conniving, calculative
3 Syllables: SUU
violating
4 Syllables: SUUU
circulating, correlating, desolating, emulating, formulating, insulating, isolating, oscillating, palpitating, regulating, simulating, speculating, stimulating, stipulating, undulating, vacillating
4 Syllables: USUU
annihilating
5 Syllables: USUUU
accumulating, articulating, assimilating, congratulating, gesticulating, manipulating

Found 24 words across 4 groupings.