Or search: chum, coho, cohoe, chinook
2 Syllables: SU
dimness, grimace, igneous, image, inches, India's, Indus, influx, ingots, interests, lineage, linkage, Plymouth, princes, ringlets, simplest, sinless, sinuous, spinach, trinkets
3 Syllables: USU
distinctness, Olympus
4 Syllables: UUSU
ignominious

Found 23 words across 3 groupings.