2 Syllables: SU
corporal
3 Syllables: SUU
corpuscles, cortical, forcible, horrible, oracle, portable, Portugal
4 Syllables: USUU
adorable, conformable, deplorable, proportional
5 Syllables: UUSUU
insupportable, oratorical

Found 14 words across 4 groupings. Skipped 1 excess word of a similar stem.