2 Syllables: SU
cancelling, dangling, gambling, handling, rambling, scrambling, strangling, wrangling
3 Syllables: SUU
anchoring, annulling, answering, banqueting, canvassing, clambering, hampering, hankering, sanctioning, tampering
3 Syllables: USU
dismantling
4 Syllables: USUU
abandoning, meandering

Found 21 words across 4 groupings.