-er c-- ccc cce cck ccl ccn ccr ccu ce- cec cee cek cel cen cer ceu ckc cl- clc cle clk cll cln clr clu cn- cnc cne cnl cnn cnr cnu crc cre crk crl crn crr cru cuc cue cuk cul cun cur cuu ec- ecc ece eck ecl ecn ecr ecu eec eee eek eel een eer ekc eke ekl ekr eku elc ele elk ell eln elr elu en- enc ene enk enl enn enr enu erc ere erk erl ern err eru eu- euc eue eul eun eur kcc kce kck kcl kcn kcr kcu ke- kec kee kek kel ken ker kkc kke kkk kkl kkn kkr kku kl- klc klr klu kn- knc kne knk knl knn knr knu krc krk krl krn krr kru kuc kue kuk kul kun kur kuu lcc lce lck lcl lcn lcr lcu lec lee lek lel len ler leu lkl lkr llc lle llk lll lln llr llu lnc lne lnk lnl lnn lnr lnu lrc lrk lrn lrr lru luc lue luk lul lun lur luu ncc nce nck ncl ncn ncr ncu ne- nec nee nek nel nen ner neu nkc nke nkk nkn nkr nku nlc nle nlk nll nln nlr nlu nnc nne nnk nnl nnn nnu nrc nre nrk nrl nrn nrr nru nuc nue nuk nul nun nur nuu rcc rce rcl rcn rcr rcu re- rec ree rek rel ren rer reu rkc rke rkk rku rlc rle rll rln rlr rlu rnc rnn rnr rnu rrc rrk rrl rrn rrr rru ruc rue ruk run rur ruu ucc uce uck ucl ucn ucr ucu uec uee uel uen uer ukc uke ukk ukl ukn ukr uku ulc ule ulk ull uln ulr ulu un- unc une unk unl unn unr unu ur- urc ure urk url urn urr uru uuc uue uun uur uuu