cccc cccu ccee ccgc ccgt ccoc ccrc ccre ccrg ccrt cctc cctt ccuc ccut cec- cece ceco cect ceec cege cego ceor ceou cer- cerc cere cero cert cet- cete ceto cgcc cgcg cger cgro cgtu coce coco coct cocu cogo coot cor- corc core corg coro corr cort cotc cote coto cott cotu coue cour cout crcc crce crcr cre- crec cree creg creo cret creu croc croe croo cror crot crrt crtc crue crug crut ctec ctge ctgu ctor ctot ctrc cucc cuce cuer cure curo curr curt cut- cutc cute cuto cutt eccc ecce ecco ecct eco- ecog ecot ecou ecrc ecrr ecru ect- ectc ecto eeee eeoc eerc eerg eero eetc eete eetu egcc egcg egcr egec egee eger egge eggo ego- egor egot egre egte eore eotc eoto ercc erce erec erer eret erg- ergg ergo eroc eroe eroo errc erre erro ertu eruc erur etcc etco etec etee eter etoe etre etro ette etto ettu euer euge eur- eurc eure euro eurt gc-c gccc gcet gcrg gctc gece geer geet gege gegg gego geo- geog gere gero gert geru gete getg geto gett geue gggg goce gocr goer gogo goog goor goot gore gorg goro gorr gort gote goto gott gou- goug gour gout grcc grce grec gree greg gret greu groc grog groo gror grot grou grrr grtc grue grug grur grut gtco gtcr gtoe guer guge gugg gugu gure gurg guro gurr gurt guru gute guto gutt gutu o-eo occc occt oce ocee ocet ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere ogee oger ogge ogog ogou ogre ogro oocr ooer oooo oore oort orce orco ore- orec oreg oreo orer orge orgo oro- oroe oror orot orro ortc orte orto otee oter oto- otoe otog otoo otor otre otro otte otto ottu otur oucc ouer ouge our- oure ouro ourt out- oute outo ouu- rccc rcet rcgc rcrg rctc rctg recc rece recr rect recu reet rege rego regr regt regu reog reot reou rere rerg rero rert reru rete reto retr rett reue reut reuu rgtr rocc roce roco roeg roer roet roge rogg rogo roog roor root rorc rore roro rort roru rotc rote rotg roto rotr rott roue rout rrrr rtcc rtce rtcg rtee ruce ruct ruer ruet ruge rugg rurc rure ruro ruru rute ruto rutt rutu tccc tccu tctc teco tecr tect teec teer teet tegg tego tegt tegu teor ter- terc tere tero terr teru tete teto tetr tett tetu teut tgcc tgtc toce toco toee toer toet toge togo togr togt toor toot torc tore torg toro torr tort toru totc tote toto totr tott toug tour tout trcc tre- trec tree treg treo tret treu trge troc troe trog troo trot trou trtc trte trtr truc true trug trut truu tteo tter ttoe tttt tucc tuco tuer tuet tugg tugu tuor turc ture turg turo turr turt turu tute tuto tutt tutu tuuo ucrc ucut ugcc ugcg ugeo uggo uggt ugro ugur uguu uocc uor- uore ure- uret urge urgu uro- uroo urre urte urur urut utec uter utor utto uttu utug uuoc uuuu