Or search: combat, belligerency
2 Syllables: SU
3 Syllables: SUU
3 Syllables: USU
4 Syllables: USUU
5 Syllables: UUSUU
6 Syllables: UUUSUU
7 Syllables: UUUUSUU

Found 72 words across 7 groupings. Skipped 1 excess word of a similar stem.