cccc cccf cccu ccee ccfc ccff ccoc ccrc ccre ccrf ccuc cec- cece ceco ceec cef- cefc ceor ceou cer- cerc cere cerf cero cfcf cfco cffr cfor cfre coce coco cocu cofc cofe coff coof cor- corc core corf coro corr coue cour crcc crce crcr cre- crec cree creo creu crfc croc croe croo cror crue cucc cuce cuer cufc cuff cufo cure curf curo curr eccc ecce ecco ecef ecfc ecfr eco- ecou ecrc ecrf ecrr ecru eeee eefe eeoc eerc eero efco efeo efor eore ercc erce erec erer erfc eroc eroe eroo errc erre erro eruc erur euer eufc eur- eurc eure euro fccf fece feer fefc fefe feff fefo feof ferc fere fero ferr feru ffcc ffee ffff ffrr foce foco foer fofo foof for- fore foro forr four frcc free freo frfc froe frou frue fuc- fufc fuff fufu fuor fur- fure furo furr o-eo occc oce ocee ocef ocre ocro ocrr ocur oec- oecc oeec oere oeuf ofcr ofer off- offc offe offo offr offu ofor ofre oocr ooer ooff oooo oore orce orco ore- orec oreo orer orfe orff orfu oro- oroe orof oror orro oucc ouer oufc oufe ouff our- oure ouro ouu- rccc rcfc recc rece recr recu reef refe reff refr refu reof reou rere rero reru reue reuf reuu rfef rffc rocc roce roco roer rofc rofe roff rofo roof roor rorc rore roro roru roue rouf rrfc rrrr ruce ruer rufc rufe ruff rufo rurc rure ruro ruru ucrc ufcu ufer uffe uocc uofo uor- uore ure- urfe urff uro- uroo urre urur uuoc uuuu