2 Syllables: SU
blinking, brimming, bringing, clinging, cringing, drinking, dwindling, flinching, flinging, grinning, hinting, imprint, inkling, instinct, kindling, limping, lingering, linking, mincing, mingling, pinching, pinning, printing, ringing, shrinking, singing, sinking, sinning, skimming, spinning, springing, sprinkling, squinting, stinging, stinking, stringing, swimming, swinging, thinking, thinning, tingling, tinkling, trimming, twinkling, Vincent, winking, winning, wringing
3 Syllables: SUU
3 Syllables: USU
beginning, convincing, evincing, impinging, infringing, reprinting, rethinking, unflinching, unthinking
4 Syllables: USUU
4 Syllables: UUSU
Found 68 words across 5 groupings. Skipped 3 excess words of a similar stem.