cccc cccf cccs ccee ccfc ccff ccrc ccre ccrf ccrs ccsf ccss cec- cece cecs ceec cees cef- cefc ceke cer- cerc cere cerf cers cesc cese cesr cess cfcf cfcs cffr cfre cfse ckck ckcs cker ckfr ckrc crcc crce crcr cre- crec cree cres crfc crfs crkc crss cscc csce cscf cscr cscs csec csee cser csfc csfr csks csrc csrs csse cssr eccc ecce ecef eces ecfc ecfr ecfs ecks ecrc ecrf ecrr ecsc ecse ecss eecs eeee eees eefe eeke eeks eerc eers eese eesk efes effs efke ekek eker ekes ekfc ercc erce erec erer eres erfc erfs erke erks errc erre errs erse esce escr escs esee esek eser eses esfs eske esks esse f--k fccf fces fcsc fece feck feek feer fees fefc fefe feff feke ferc fere ferk ferr fers fese fess ffcc ffee ffff ffrr ffss frcc free fres frfc frsc fscc fsck fsec fssc fssf kccc kcck kccr kcec kcee kcfc kckc kckf kckk kckr kcrc kcrr kcrs kcsc kcse kcsf kcsr kcss keck kecr keef keek keer kees kefc keff kefr kefs kekc keke keks ker- kerc kere kerf kerk kerr kers kesc kesk kesr kess kfcf kfcr kfcs kfer kfff kffk kfrc kfre kfrr kfrs kfse kfsk kfsr kkck kkcr kkcs kkfr kkfs kkkk kkrc kkre kkrf kkrk kkrr kkrs kkse kksf kksr kkss krcc krce krcs krec kree kref krek kres krfc krfe krff krfs krkc krke krkk krkr krks krrc krre krrf krrk krrr krrs krsc krse krsf krsk krsr krss ksce ksck kscr kscs ksec ksee ksek kser ksfc ksfe ksfr kske kskf kskk kskr ksks ksrf ksrr ksrs ksse kssr ksss rccc rccs rcfc rcsc rcss recc rece reck recr recs reef reek rees refe reff refr refs reke reks rere rers rese ress rfef rffc rkkf rkss rrfc rrrr rscc rscs rsee rsfc rsre sccc scce sccs scec scee scer scfc scfe sck- scr- scrc scre scrs scsc scsr se-c se-e se-f se-k se-s sec- secc sece seck secr secs seec seef seek seer sees seff seke sekk serc sere serf serk serr sers sesc sese sess sfcc sfcs sfer sffc sfrc sfss skee sker skes skfc skss srcc srec sres srfc sscc ssce sscs ssec ssee sses ssfc ssrc ssrs sssc sssf ssss