cccc ccci ccee ccic ccii ccir ccoc ccrc ccre ccri cec- cece ceci ceco ceec ceor cer- cerc cere ceri cero cery cicc cici cico cicr ciee cier ciii cior circ cire ciri ciro cirr coce coco coir cor- corc core cori coro corr cory coyo coyr crcc crce crcr cre- crec cree crei creo cric crie croc croe croo cror croy cry- cryo cyc- cycc cyre cyy- cyyc eccc ecce ecci ecco eco- ecrc ecri ecrr eeee eeoc eerc eero eery eico eiec eiei eier eire eiry eoir eore eori ercc erce erec erei erer eric erie erio eroc eroe eroi eroo errc erre erro eryc erye eyec eyer eyey eyio eyir eyre eyry eyyr iccc icci icco iccr icec icee icer icey icoc icor icrc icre icrr icry iecc ieie ieio iere ieri iiie iiii iiio iioi iioo iirc ioci ioee ioii ioio iooi iooo iore iori ircc iree irer iri- iric irie irio iriy iroc irrc irre irri iyer iyre o-eo occc occi oce ocee ocre ocro ocrr oec- oecc oeec oere oeye oeyo oici oier oiii oire oiry oocr ooer oooo oore oory orce orci orco ore- orec oreo orer orey ori- oric orie orio oro- oroe oror oroy orri orro orry oyce oyee oyer oyre oyri rccc rcic rcyc recc rece reci recr recy reii reir rere reri rero rery reye ricc rice rico rier rire riri riyo rocc roce roco roer roey roio roir rooi roor rorc rore rori roro rory roye rrrr yccc ycee ycie yeer yeie yeii yeir yere yeri yero yerr yery yeye yeyi yeyo yeyr yire yirr yore yori yoro yory yoye yoyo yyyy