Or search: scout, reconnoitre
2 Syllables: SU
boiler, cloister, lawyer, loiter, moisture, oyster, pointer, Sawyer, toilers
3 Syllables: USU
destroyer, embroidered, employer, rejoinder
4 Syllables: UUSU
reconnoitre

Found 14 words across 3 groupings. Skipped 10 excess words of a similar stem.