cccc ccnc ccny ccoc cctc cctt cnco cnnz cntc coco coct con- conc conn cono cont cony coon coot cotc cotn coto cott coty coyn coyo coyt cozy cozz ctot cttn cyc- cycc cyn- cyno cyon cyt- cyto cyy- cyyc cyyn czon czyz nccc nccn ncct ncnc ncoc nctc nnnn nnot nntn noco noct non- nonn nono nont noo- noon nooo noot not- noto nott noyo noyt noyz ntcc ntoz ntto nycc nyco nycy nynt nyny nyon nytc nzcc occc occn occt ocon oct- octo octy onc- onco onct onno onon onoy onoz ont- ontc onto onzo onzy oont oooo ooty oozy oto- oton otoo otoy otto oynt oyon ozon ozzy tccc tcnn tcon tctc tncc to-y toco tonn tono tony toon toot totc toto tott toty toyn toyo toyt toyz tozo tozy ttcn tton ttoy tttt tyco tynt tyny tyto tytt tyty tyyn tzzt yccc yctc ynon ynot yono yont yoon yoot yooz yott yoyn yoyo yozo yyyy zoco zon- zony zoo- zoon zoot zott zoty zotz zozo zzzz