ccccc ceere ceese cefcu cerc- cerce cercs cerec cerer ceres cerfs cerre cerrs cerse cerss cerus cesce cescr cesse cfu-e crece creer crees cresc crese cress creu- creue crres cruce crufe crure cruse csere cuers cufeu cuffe cuffs cufre curce curer cures curre currs curse cusec cuser cusse ecrus ecser eeeee efere effer efuru efuse erecs erere erres erses esces esere esref esser esses essse essue esure eucre eurre eurus euser feces feere feers feese ferce feres ferr- ferre ferse ferus feser fesse feuer feurs frcsc freer frees frere frese fress freur fu-fu fucus fuffs furrs furse furus fusee fuser fuses fusse fusus fuuse recce recue recur recus reece reecs reefe reefs reere reese refer reffe refus rere- reree reres resee reses resse resue resus reuer reuse reuss rsssf rucer ruere ruers ruffe ruffs rufus rurec rusce ruses russe scere screc scree scrue scrus scufe scuff scure scurf scurr scuse secre secur secus seece seere seers seese seesu sefer sefes seffe serce serec seref serer seres serfe serff serfs serre serse serss serue sesce seser seses sesse sesue seuer seure seuss ssfcu sssss sucr- sucre suere suers suess sueur sufes suffe suffr suffs surer sures surfs surre surur surus suser suses susse susus u-cee ufere ufeus ursus uruce urucu us-sc usees users usses usure uuuuu