-ous ffff ffss fftf ffun fnuf fofo fono fons font foof foon foos foot foso foss fost foto fots fott foun fous fout fsfo fssf ftos fuff fufu funf funs funt fuso fuss fust fusu futo futs futu nfff nfon nfsu nfto nnnn nnos nnot nnss nntn non- nonn nono nons nont nonu noo- noon nooo noos noot nos- noss nost nosu not- noto nots nott noun nous nout nsfs nsof nsos nsou nssf nsso nsss nsts nstu ntfs ntnu ntof ntsf ntss ntsu ntto nuff nunn nuno nuns nunt nuon nuss nust nusu nuts nutt nutu off- offo offs offu ofno ofst ofus onno onon onos onso onst ont- onto onus onut ooff oofs oons oont oooo ooos oost oots oous osno osoo osos osso ossu osts osun oto- otof oton otoo otos otso otsu otto otts ottu otus ouff oun- oust out- outo outs ouu- s-os sfnt sfos sfss sfsu sfts snfu snns snoo snos snot snus sofo soft son- sono sons sont sonu soof soon soos soot soso soss sost sotn soto sots sotu souf soun sous sout ssns ssot sssf ssss ssts stfn stfu stnn stns stof ston stoo stos stot stou stsf stss stuf stun stus stut suf- suff sufs sufu sun- sunn suno suns sunt sunu suos sus- suso suss sust susu suto sutu suus tfot tfss tnts tnut toff tofo toft tofu tonn tono tons tonu toof toon toos toot toso toss tost tosu toto tots tott toun tous tout tsos tsou tssf tsst tsts tsun ttff ttfn tton ttss tttt tuff tufo tuft tufu tunn tuno tuns tunu tuos tuss tust tuto tuts tutt tutu tuuo ufos unno unns unon unos uns- unso unst unto unts unus unut uofo usfs usno usnu usos ussf usss usst ussu usto usts usun usus utfo utto uttu uuno uutf uuuu