Or search: literal, existent
2 Syllables: SU
adult, apple, axial, axle, babble, Babel, battle, capsule, cattle, chapel, chattel, crackle, grapple, jackal, paddle, prattle, rabble, rattle, saddle, shackled, shackles, tackle, tactful
3 Syllables: SUU
fractional, maximal, taxable, tractable
3 Syllables: USU
embattled, Seattle
4 Syllables: USUU
adaptable, impractical, intractable

Found 32 words across 4 groupings. Skipped 16 excess words of a similar stem.