Or search: naive, uninformed, unenlightened
2 Syllables: SU
blooded, bucket, couplet, doublet, flooded, glutted, Ludwig, public, publick, public's, puppet, studded, subject
3 Syllables: USU
constructed, corrupted, deducted, disrupted, erupted, inducted, instructed, obstructed, Republic
4 Syllables: UUSU
interrupted, reconstructed, uncorrupted, unobstructed
5 Syllables: UUUSU
uninterrupted

Found 27 words across 4 groupings. Skipped 4 excess words of a similar stem.