cccc ccci cccu ccic ccii ccir ccoc ccrc ccri ccuc cicc cici cico cicr cicu ciii cior circ ciri ciro cirr ciuc coco cocu coir cor- corc cori coro corr cour cozi cozz crcc crcr crcz cric criu croc croo cror croz cruz cucc cuci cui- cuir curi curo curr cuzo iccc icci icco iccr iccu icoc icor icrc icrr icru iiii iiio iioi iioo iirc iiuc ioci ioii ioio iooi iooo iori ircc ircu iri- iric irio iroc irrc irri iucc iuiu izzo occc occi ocro ocrr ocur oici oiii oocr oooo oozi orci orco ori- oric orio oro- oror oroz orri orro orzo orzu oucc ouii ouir our- ouro ouu- ouzo rccc rcic ricc rico riou rioz riri rizi rizu rizz rocc roco roio roir roiu roiz rooi roor rooz rorc rori roro roru rouz rozi rozz rrrr ruci ruiz rurc ruri ruro ruru ruzi ucci ucio ucoz ucrc uirr uocc uor- urci uric uriu uro- uroo urri urur uruz uuoc uuri uuuu uzzi z-ro zico zirc ziri ziro zizi zizz zoco zoic zoio zoo- zorc zori zoro zouc zozo zozu zuoz zurr zuru zuzu zzzz