-er c-- ccc cce cck ccl ccn ccr ccu ccv ce- cec cee cek cel cen cer ceu cev ckc cl- clc cle clk cll cln clr clu clv cn- cnc cne cnl cnn cnr cnu cnv crc cre crk crl crn crr cru crv cuc cue cuk cul cun cur cuu cuv cvc cve cvk cvl cvn cvr cvu cvv ec- ecc ece eck ecl ecn ecr ecu ecv eec eee eek eel een eer eev ekc eke ekl ekr eku ekv elc ele elk ell eln elr elu elv en- enc ene enk enl enn enr enu env erc ere erk erl ern err eru erv eu- euc eue eul eun eur euv evc eve evl evn evr evv kcc kce kck kcl kcn kcr kcu ke- kec kee kek kel ken ker kev kkc kke kkk kkl kkn kkr kku kkv kl- klc klr klu klv kn- knc kne knk knl knn knr knu krc krk krl krn krr kru krv kuc kue kuk kul kun kur kuu kvk kvn kvr kvv lcc lce lck lcl lcn lcr lcu lcv lec lee lek lel len ler leu lev lkl lkr llc lle llk lll lln llr llu llv lnc lne lnk lnl lnn lnr lnu lrc lrk lrn lrr lru lrv luc lue luk lul lun lur luu luv lvc lve lvl lvn lvr lvv ncc nce nck ncl ncn ncr ncu ncv ne- nec nee nek nel nen ner neu nev nkc nke nkk nkn nkr nku nlc nle nlk nll nln nlr nlu nlv nnc nne nnk nnl nnn nnu nnv nrc nre nrk nrl nrn nrr nru nrv nuc nue nuk nul nun nur nuu nuv nvc nve nvk nvl nvn nvu nvv rcc rce rcl rcn rcr rcu rcv re- rec ree rek rel ren rer reu rev rkc rke rkk rku rkv rlc rle rll rln rlr rlu rnc rnn rnr rnu rnv rrc rrk rrl rrn rrr rru ruc rue ruk run rur ruu ruv rvc rve rvl rvn rvr rvu rvv ucc uce uck ucl ucn ucr ucu ucv uec uee uel uen uer ukc uke ukk ukl ukn ukr uku ulc ule ulk ull uln ulr ulu ulv un- unc une unk unl unn unr unu unv ur- urc ure urk url urn urr uru uuc uue uun uur uuu uvc uve uvl uvu uvv v-e vcc vce vcl vcn vcr vcu vec vee vek vel ven ver veu vl- vlc vle vlk vll vlv vn- vnl vnr vnu vnv vrc vre vrk vrn vrr vru vue vuk vul vur vuv vvc vvr vvv