cccc cccf ccee ccfc ccff ccrc ccre ccrf cec- cece ceec cef- cefc ceke cer- cerc cere cerf cfcf cffr cfre ckck cker ckfr ckrc crcc crce crcr cre- crec cree crfc crkc eccc ecce ecef ecfc ecfr ecrc ecrf ecrr eeee eefe eeke eerc efke ekek eker ekfc ercc erce erec erer erfc erke errc erre f--k fccf fece feck feek feer fefc fefe feff feke ferc fere ferk ferr ffcc ffee ffff ffrr frcc free frfc kccc kcck kccr kcec kcee kcfc kckc kckf kckk kckr kcrc kcrr keck kecr keef keek keer kefc keff kefr kekc keke ker- kerc kere kerf kerk kerr kfcf kfcr kfer kfff kffk kfrc kfre kfrr kkck kkcr kkfr kkkk kkrc kkre kkrf kkrk kkrr krcc krce krec kree kref krek krfc krfe krff krkc krke krkk krkr krrc krre krrf krrk krrr rccc rcfc recc rece reck recr reef reek refe reff refr reke rere rfef rffc rkkf rrfc rrrr