cccc cccv ccee ccoc ccrc ccre ccvo cec- cece ceco ceec ceor cer- cerc cere cero cery cevo cevy coce coco cor- corc core coro corr cory cove covo covy coyo coyr crcc crce crcr cre- crec cree creo croc croe croo cror croy cry- cryo cvcc cver cvrr cyc- cycc cyre cyve cyy- cyyc eccc ecce ecco eco- ecrc ecrr ecrv eeee eeoc eerc eero eery eore ercc erce erec erer erev eroc eroe eroo errc erre erro erve eryc erye ever evey evoe evoo evre evry eyec eyer eyey eyre eyry eyyr o-eo occc oce ocee ocre ocro ocrr oec- oecc oeec oere oeye oeyo oocr ooer oooo oore oory orce orco ore- orec oreo orer orey oro- oroe oror oroy orro orry orve orvr ovee over ovey ovo- ovoo ovre oyce oyee oyer oyre rccc rcvr rcyc recc rece recr recy reev rere rero rery reve revo revy reye rocc roce roco roer roev roey roor rorc rore roro rory rove rovo roye rrrr rv-c rver vecc veer veor ver- vere vero very veve vevo vevy veye veyr voce voer vooc voor vor- vore voro vory voye vreo vroc vver vvvv vyce vyer vyre yccc ycee yeer yere yero yerr yery yeve yeye yeyo yeyr yore yoro yory yove yoye yoyo yver yvor yyyy