cccc cccu cccv ccee ccoc ccrc ccre ccrt cctc cctt cctv ccuc ccut ccvo cec- cece ceco cect ceec ceor ceou cer- cerc cere cero cert cet- cete ceto cetv cevo coce coco coct cocu coot cor- corc core coro corr cort cotc cote coto cott cotu coue cour cout cove covo crcc crce crcr cre- crec cree creo cret creu croc croe croo cror crot crrt crtc crtv crue crut ctec ctor ctot ctrc ctvo ctvt cucc cuce cuer cure curo curr curt cut- cutc cute cuto cutt cutv cuve cvcc cver cvet cvrr cvte eccc ecce ecco ecct eco- ecot ecou ecrc ecrr ecru ecrv ect- ectc ecto ectv eeee eeoc eerc eero eetc eete eetu eore eotc eoto ercc erce erec erer eret erev eroc eroe eroo errc erre erro ertu eruc erur eruv erve etcc etco etec etee eter etoe etre etro ette etto ettu etvo euer eur- eurc eure euro eurt ever evet evoe evoo evre o-eo occc occt oce ocee ocet ocre ocro ocrr oct- octe octo ocur oec- oecc oeec oere oocr ooer oooo oore oort orce orco ore- orec oreo orer oro- oroe oror orot orro ortc orte orto orve orvr otee oter oto- otoe otoo otor otov otre otro otte otto ottu otur oucc ouer our- oure ouro ourt out- oute outo ouu- ovee over ovet ovo- ovoo ovot ovre rccc rcet rctc rctv rcuv rcvr recc rece recr rect recu reet reev reot reou rere rero rert reru rete reto retr rett reue reut reuu reve revo rocc roce roco roer roet roev roor root rorc rore roro rort roru rotc rote roto rotr rott roue rout rove rovo rrrr rtcc rtce rtee rtve ruce ruct ruer ruet rurc rure ruro ruru rute ruto rutt rutu ruve ruvu rv-c rver tccc tccu tcov tctc teco tecr tect teec teer teet teev teor ter- terc tere tero terr teru tete teto tetr tett tetu teut toce toco toee toer toet toor toot torc tore toro torr tort toru torv totc tote toto totr tott tour tout touv tove tovo trcc tre- trec tree treo tret treu trev troc troe troo trot trou trtc trte trtr truc true trut truu tteo tter ttoe tttt tucc tuco tuer tuet tuor turc ture turo turr turt turu tute tuto tutt tutu tuuo tver tvro tvrr tvtv ucrc uctv ucut uocc uor- uore uovo ure- uret uro- uroo urre urte urur urut urve utec uter utor utto uttu uuoc uuuu uv-c uver uvvu vecc veer veet veor ver- vere vero vert vete veto vetr veur veve vevo voce voer voet voeu vooc voor voot vor- vore voro vort voru vote voto voue vour vout vreo vret vroc vrot vrto vtec vuco vurt vutv vver vvvv