cccc cccf ccci cccu ccfc ccff ccfi ccic ccii ccir ccoc ccrc ccrf ccri ccuc cfcf cfco cffr cfor cicc cici cico cicr cicu ciff ciii cior circ ciri ciro cirr ciuc coco cocu cofc coff cofi coif coir coof cor- corc corf cori coro corr cour crcc crcr crfc cric crif criu croc croo cror cucc cuci cufc cuff cufi cufo cui- cuif cuir curf curi curo curr fccf fcic fcii ffcc ffff ffii ffrr ficc fico fifc fiff fifi fifo fiii fior foci foco fofo foof for- fori foro forr four frcc frfc fric frio frou fuc- fuci fufc fuff fufu fuir fuor fur- furi furo furr iccc iccf icci icco iccr iccu icoc icor icrc icrf icrr icru ifco ific ifor ifrf ifri iiii iiio iioi iioo iirc iiuc ioci iofc ioii ioio ioof iooi iooo iori ircc ircu irfu iri- iric irio iroc irrc irri iucc iuiu occc occi ocro ocrr ocur ofcr off- offc offo offr offu ofor oici oiii oocr ooff oooo orci orco orff orfi orfu ori- oric orif orio oro- orof oror orri orro oucc oufc ouff ouii ouir our- ouro ouu- rccc rcfc rcic rffc rfic ricc rico riff rifu riif riou riri rocc roco rofc roff rofo roif roio roir roiu roof rooi roor rorc rori roro roru rouf rrfc rrif rrrr ruci rufc ruff rufo ruif rurc ruri ruro ruru ucci ucio ucrc ufcu uirr uocc uofo uor- urci urff urfi uric urif uriu uro- uroo urri urur uuoc uuri uuuu