-er c-- ccc cce cck ccl ccn ccr ccs ccu ce- cec cee cek cel cen cer ces ceu ckc cks cl- clc cle clk cll cln clr cls clu cn- cnc cne cnl cnn cnr cns cnu crc cre crk crl crn crr crs cru csc cse csk csl csn csr css csu cuc cue cuk cul cun cur cus cuu ec- ecc ece eck ecl ecn ecr ecs ecu eec eee eek eel een eer ees ekc eke ekl ekr eks eku elc ele elk ell eln elr els elu en- enc ene enk enl enn enr ens enu erc ere erk erl ern err ers eru es- esc ese esk esl esn esr ess esu eu- euc eue eul eun eur eus kcc kce kck kcl kcn kcr kcs kcu ke- kec kee kek kel ken ker kes kkc kke kkk kkl kkn kkr kks kku kl- klc klr kls klu kn- knc kne knk knl knn knr knu krc krk krl krn krr krs kru ksc kse ksk ksl ksn ksr kss ksu kuc kue kuk kul kun kur kus kuu lcc lce lck lcl lcn lcr lcs lcu lec lee lek lel len ler les leu lkl lkr lks llc lle llk lll lln llr lls llu lnc lne lnk lnl lnn lnr lns lnu lrc lrk lrn lrr lrs lru lsc lse lsk lsl lsn lsr lss lsu luc lue luk lul lun lur lus luu ncc nce nck ncl ncn ncr ncs ncu ne- nec nee nek nel nen ner nes neu nkc nke nkk nkn nkr nks nku nlc nle nlk nll nln nlr nls nlu nnc nne nnk nnl nnn nns nnu nrc nre nrk nrl nrn nrr nrs nru nsc nse nsk nsl nsn nsr nss nsu nuc nue nuk nul nun nur nus nuu rcc rce rcl rcn rcr rcs rcu re- rec ree rek rel ren rer res reu rkc rke rkk rks rku rlc rle rll rln rlr rls rlu rnc rnn rnr rns rnu rrc rrk rrl rrn rrr rrs rru rsc rse rsk rsl rsn rsr rss rsu ruc rue ruk run rur rus ruu scc sce sck scl scn scr scs scu se- sec see sek sel sen ser ses seu sk- skc ske skk skl skr sks sku slc sle slk sll sln slr sls slu snc sne snk snl snn snr sns snu sr- src sre srk srl srn srr srs ss- ssc sse ssk ssl ssn ssr sss ssu suc sue suk sul sun sur sus suu ucc uce uck ucl ucn ucr ucs ucu uec uee uel uen uer ues ukc uke ukk ukl ukn ukr uku ulc ule ulk ull uln ulr uls ulu un- unc une unk unl unn unr uns unu ur- urc ure urk url urn urr urs uru usc use usk usl usn usr uss usu uuc uue uun uur uus uuu