cccc cccu ccgc ccgt ccnc ccnr ccnu ccoc ccrc ccrg ccrt cctc cctt ccuc ccut cgcc cgcg cgro cgtu cnco cnrc cnrr cnrt cntc cntr cnut coco coct cocu cogo con- conc cong conn cono cont coon coot cor- corc corg corn coro corr cort cotc cotn coto cott cotu coun cour cout crcc crcr croc cron croo cror crot crrt crtc crug crun crut ctgu ctor ctot ctrc ctrn cttn cucc cucn cuno cunt cuon curn curo curr curt cut- cutc cuto cutt gc-c gccc gcrg gctc gggg ggrn gncc gngc gnoo gnrc gnrr gocr gogo gon- gong gonn gono gonu goog goon goor goot gorg gorn goro gorr gort goto gott gou- goug goun gour gout grcc groc grog gron groo gror grot grou grrr grtc grug grun grur grut gtco gtcr gugg gugu gung gunn gunt gurg gurn guro gurr gurt guru guto gutt gutu nccc nccn nccr ncct nccu ncgr ncnc ncoc ncor ncrc nctc nctr ngon ngor ngou ngtn ngur nguu nngn nnnn nnot nntn noco noct nogg nogo nogt non- nong nonn nono nont nonu noo- noon nooo noor noot nor- norc norg norn noro norr nort not- noto nott noun nour nout nroc nron nrrc ntcc ntnu ntrc ntru ntto nttr ntuc nucu nunc nung nunn nuno nunt nuoc nuon nurc nurn nurr nurt nuru nutt nutu occc occn occt ocon ocro ocrr oct- octo ocur ogog ogon ogou ogro ogun onc- onco onct ongo ongu onno onon onor ont- ontc onto onur onut oocr oont oooo oort orco orgn orgo ornc orno oro- oron oror orot orro ortc orto oto- otog oton otoo otor otro otto ottu otur oucc oun- oung our- ourn ouro ourt out- outo ouu- rccc rcgc rcnr rcon rcrg rctc rctg rgtr rnco rnnt rnot rnut rocc roco rogg rogo ronc rong rono ront roog roon roor root rorc roro rort roru rotc rotg rotn roto rotr rott roun rout rrrr rrun rtcc rtcg ruct rugg runc rung runn runo runt rurc ruro ruru ruto rutt rutu ruun tccc tccu tcnn tcon tctc tgcc tgtc tncc tnut toco togo togr togt tong tonn tono tonu toon toor toot torc torg torn toro torr tort toru totc toto totr tott toug toun tour tout trcc trng trno troc trog tron troo trot trou trtc trtr truc trug trun trut truu ttcn tton tttt tucc tuco tugg tugu tunc tung tunn tuno tunu tuor turc turg turn turo turr turt turu tuto tutt tutu tuuo ucon ucrc ucut ugcc ugcg uggo uggt ugro ugur uguu uncc uncg unco unct ungo ungu unno unon unro unto unut uocc uor- urgu uro- uroo urun urur urut utor utto uttu utug uuno uuoc uuuu