-er c-- ccc cce ccl ccn ccr ccu ce- cec cee cel cen cer ceu cl- clc cle cll cln clr clu cn- cnc cne cnl cnn cnr cnu crc cre crl crn crr cru cuc cue cul cun cur cuu ec- ecc ece ecl ecn ecr ecu eec eee eel een eer elc ele ell eln elr elu en- enc ene enl enn enr enu erc ere erl ern err eru eu- euc eue eul eun eur lcc lce lcl lcn lcr lcu lec lee lel len ler leu llc lle lll lln llr llu lnc lne lnl lnn lnr lnu lrc lrn lrr lru luc lue lul lun lur luu ncc nce ncl ncn ncr ncu ne- nec nee nel nen ner neu nlc nle nll nln nlr nlu nnc nne nnl nnn nnu nrc nre nrl nrn nrr nru nuc nue nul nun nur nuu rcc rce rcl rcn rcr rcu re- rec ree rel ren rer reu rlc rle rll rln rlr rlu rnc rnn rnr rnu rrc rrl rrn rrr rru ruc rue run rur ruu ucc uce ucl ucn ucr ucu uec uee uel uen uer ulc ule ull uln ulr ulu un- unc une unl unn unr unu ur- urc ure url urn urr uru uuc uue uun uur uuu