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Noun A polyomino made up of 23 squares. pluraltricosominoes.
Noun A polyomino made up of 24 squares. pluraltetracosominoes.
Noun A polyomino made up of 25 squares. pluralpentacosominoes.
Noun A polyomino made up of 26 squares. Pluralhexacosominoes.
Noun A polyomino made up of 27 squares. pluralheptacosominoes