cccc ccci cccs ccee ccic ccii ccir ccis ccrc ccre ccri ccrs ccsi ccss cec- cece ceci cecs ceec cees ceke cer- cerc cere ceri cers cesc cese cesi cesr cess cicc cici cicr cics ciee cier cies ciii ciis cikr circ cire ciri cirk cirr cirs cis- cisc cise cisk cisr ciss ckck ckcs cker ckrc crcc crce crcr cre- crec cree crei cres cric crie crik cris crkc crss cscc csce csci cscr cscs csec csee cser csik csir csis csks csrc csrs csse cssr eccc ecce ecci eces ecis ecks ecrc ecri ecrr ecsc ecse ecss eecs eeee eees eeke eeks eerc eers eese eesi eesk eick eics eiec eiei eier eies eike eiki eiks eire eirs eise eisk eiss ekek eker ekes ekis ekki eksi ercc erce erec erei erer eres eric erie erik eris erke erki erks errc erre errs erse ersi esce esci escr escs esee esek eser eses esie esik esis eske esks esri esse essi iccc icci iccr iccs icec icee icer ices icis icke icks icrc icre icrr icrs icsc icse icsi icsr icss iecc ieie iere ieri iers iesc iesi iesr iies iiie iiii iiis iirc iirs iisc iisi iisr ikee iker ikes ikki ikri ircc ircs iree irer ires iri- iric irie iris irki irks irrc irre irri irrs irse iscc isci iscr iscs isec isee iser ises isic isie isis isri issc isse issi issr isss k-ci kccc kcci kcck kccr kcec kcee kcei kcic kcie kcii kcir kcis kckc kckk kckr kcrc kcri kcrr kcrs kcsc kcse kcsi kcsr kcss keck kecr keek keer kees keii keik keir keis kekc keke keki keks ker- kerc kere keri kerk kerr kers kesc kesi kesk kesr kess kicc kice kick kicr kics kier kies kiic kiii kiik kiis kikc kiki kikk kikr kirc kiri kirk kirr kirs kisc kise kisi kisk kisr kiss kkci kkck kkcr kkcs kkic kkik kkkk kkrc kkre kkrk kkrr kkrs kkse kksi kksr kkss krcc krce krci krcs krec kree krei krek kres krik kris krkc krke krki krkk krkr krks krrc krre krri krrk krrr krrs krsc krse krsk krsr krss ksce ksci ksck kscr kscs ksec ksee ksei ksek kser ksii ksik ksir ksis kske kskk kskr ksks ksrr ksrs ksse kssi kssr ksss rccc rccs rcic rcis rcsc rcsi rcss recc rece reci reck recr recs reek rees reii reik reir reis reke reki reks rere reri rers rese resi ress ricc rice rick rics riek rier ries riis rike riki rikk rire riri rirs risc rise risi risk riss rkss rrrr rscc rscs rsee rsis rsre s-ic s-ii sccc scce sccs scec scee scer sci- scic scie scir scis sck- scr- scrc scre scri scrs scsc scsi scsr se-c se-e se-i se-k se-s sec- secc sece seck secr secs seec seek seer sees seie seii seik seir seis seke seki sekk serc sere seri serk serr sers sesc sese sesi sess sicc sice sici sick sics siec siek sier sies siik sike siki sikr siks sirc sire siri sirk sirr sirs sisc sise sisi sisk siss skee skei sker skes skic skie skik skir skis skss srcc srec sres sris sscc ssce ssci sscs ssec ssee sses ssis ssrc ssri ssrs sssc sssi ssss