Or search: remind, commemorate, immortalize, immortalise, memorialise, monumentalise, monumentalize
2 Syllables: SU
realise, realize
3 Syllables: SUU
formalized, normalized, organise, organize
4 Syllables: USUU
demoralized, disorganized, immortalized, materialize, reorganize, unorganized

Found 12 words across 3 groupings. Skipped 2 excess words of a similar stem.