cccc cccv ccnc ccoc cctc cctt cctv ccvo cnco cntc coco coct con- conc conn cono cont conv coon coot cotc cotn coto cott covo ctot cttn ctvo ctvt cvcc n-tv nccc nccn ncct ncnc ncoc nctc nctv nnnn nnot nntn nnvt noco noct non- nonn nono nont noo- noon nooo noot noov not- noto nott notv nov- novo ntcc ntto nttv nvcc nvtc nvtv occc occn occt ocon oct- octo onc- onco onct onno onon ont- ontc onto ontv oont oooo oto- oton otoo otov otto ovo- ovon ovoo ovot tccc tcnn tcon tcov tctc tncc toco tonn tono toon toot totc toto tott tovo ttcn tton tttt tvon tvtv vcon vnto vonn vont vooc voot voto vvvv