-er -ic b-u bbb bbc bbe bbi bbl bbn bbr bbu bcb bcc bce bci bcl bcn bcr bcu be- beb bec bee bei bel ben ber beu bi- bib bic bie bii bil bin bir biu blb blc ble bli bll bln blr blu bnb bnc bne bni bnl bnn bnr bnu brb bre bri brl brn brr bru bub buc bue bui bul bun bur buu c-- cbb cbc cbe cbi cbl cbn cbr cbu ccb ccc cce cci ccl ccn ccr ccu ce- ceb cec cee cei cel cen cer ceu ci- cib cic cie cii cil cin cir ciu cl- clb clc cle cli cll cln clr clu cn- cnb cnc cne cni cnl cnn cnr cnu crb crc cre cri crl crn crr cru cub cuc cue cui cul cun cur cuu ebb ebc ebe ebi ebl ebn ebr ebu ec- ecb ecc ece eci ecl ecn ecr ecu eeb eec eee eel een eer eib eic eie eii eil ein eir eiu elb elc ele eli ell eln elr elu en- enb enc ene eni enl enn enr enu erb erc ere eri erl ern err eru eu- eub euc eue eui eul eun eur ibb ibc ibe ibi ibl ibn ibr ibu icb icc ice ici icl icn icr icu ie- iec iee iei iel ien ier iib iic iie iii iil iin iir iiu il- ilb ilc ile ili ill iln ilr ilu in- inb inc ine ini inl inn inr inu ir- irb irc ire iri irl irn irr iru iu- iub iuc iue iui iur lbb lbc lbe lbi lbl lbr lbu lcb lcc lce lci lcl lcn lcr lcu leb lec lee lei lel len ler leu lib lic lie lii lil lin lir liu llb llc lle lli lll lln llr llu lnb lnc lne lni lnl lnn lnr lnu lrb lrc lri lrn lrr lru lub luc lue lui lul lun lur luu n-i nbb nbc nbe nbi nbl nbn nbr nbu ncb ncc nce nci ncl ncn ncr ncu ne- neb nec nee nei nel nen ner neu nib nic nie nii nil nin nir niu nlb nlc nle nli nll nln nlr nlu nnb nnc nne nni nnl nnn nnu nrb nrc nre nri nrl nrn nrr nru nub nuc nue nui nul nun nur nuu rbb rbc rbe rbi rbl rbn rbr rbu rcb rcc rce rci rcl rcn rcr rcu re- reb rec ree rei rel ren rer reu rib ric rie rii ril rin rir rlc rle rli rll rln rlr rlu rnb rnc rni rnn rnr rnu rrb rrc rri rrl rrn rrr rru rub ruc rue rui run rur ruu ubb ubc ube ubi ubl ubn ubr ubu ucb ucc uce uci ucl ucn ucr ucu ueb uec uee uei uel uen uer uib uic uie uii uil uin uir uiu ulb ulc ule uli ull uln ulr ulu un- unb unc une uni unl unn unr unu ur- urb urc ure uri url urn urr uru uuc uue uun uur uuu