cccc ccee ccoc ccrc ccre ccrt cctc cctt cec- cece ceco cect ceec ceor cer- cerc cere cero cert cery cet- cete ceto coce coco coct coot cor- corc core coro corr cort cory cotc cote coto cott coty coyo coyr coyt crcc crce crcr cre- crec cree creo cret croc croe croo cror crot croy crrt crtc cry- cryo ctec ctor ctot ctrc cyc- cycc cyre cyrt cyt- cyte cyto cyy- cyyc eccc ecce ecco ecct eco- ecot ecrc ecrr ect- ectc ecto eeee eeoc eerc eero eery eetc eete eore eotc eoto ercc erce erec erer eret eroc eroe eroo errc erre erro eryc erye etcc etco etec etee eter etoe etoy etre etro ette etto etty eyec eyer eyet eyey eyot eyre eyry eyte eyyr o-eo occc occt oce ocee ocet ocre ocro ocrr oct- octe octo octy oec- oecc oeec oere oeye oeyo oocr ooer oooo oore oort oory ooty orce orco ore- orec oreo orer orey oro- oroe oror orot oroy orro orry ortc orte orto otee oter oto- otoe otoo otor otoy otre otro otry otte otto otyr oyce oyee oyer oyre rccc rcet rctc rcyc recc rece recr rect recy reet reot rere rero rert rery rete reto retr rett rety reye rocc roce roco roer roet roey roor root rorc rore roro rort rory rotc rote roto rotr rott roty roye royt rrrr rtcc rtce rtee ryet ryot rytt ryyt tccc tctc teco tecr tect teec teer teet teor ter- terc tere tero terr tery tete teto tetr tett teye teyr to-y toce toco toee toer toet toey toor toot torc tore toro torr tort tory totc tote toto totr tott toty toyo toyt trcc tre- trec tree treo tret trey troc troe troo trot troy trtc trte trtr try- trye tryo tteo tter ttoe ttoy tttt tyce tyco tyee tyer tyet tyr- tyre tyro tyrr tyte tyto tytt tyty yccc ycee yctc yeer yeet yeot yere yero yerr yert yery yete yeto yett yeye yeyo yeyr yoot yore yoro yort yory yote yott yoye yoyo ytre yyyy