-er -ic b-u bbb bbc bbe bbi bbm bbn bbr bbu bcb bcc bce bci bcm bcn bcr bcu be- beb bec bee bei bem ben ber beu bi- bib bic bie bii bim bin bir biu bmb bmc bme bmi bmm bmn bmr bmu bnb bnc bne bni bnn bnr bnu brb bre bri brm brn brr bru bub buc bue bui bum bun bur buu c-- cbb cbc cbe cbi cbm cbn cbr cbu ccb ccc cce cci ccm ccn ccr ccu ce- ceb cec cee cei cem cen cer ceu ci- cib cic cie cii cim cin cir ciu cmb cmc cme cmi cmm cmn cmr cmu cn- cnb cnc cne cni cnm cnn cnr cnu crb crc cre cri crm crn crr cru cub cuc cue cui cum cun cur cuu ebb ebc ebe ebi ebm ebn ebr ebu ec- ecb ecc ece eci ecm ecn ecr ecu eeb eec eee eem een eer eib eic eie eii eim ein eir eiu em- emb emc eme emi emm emn emr emu en- enb enc ene eni enm enn enr enu erb erc ere eri erm ern err eru eu- eub euc eue eui eun eur ibb ibc ibe ibi ibm ibn ibr ibu icb icc ice ici icm icn icr icu ie- iec iee iei iem ien ier iib iic iie iii iim iin iir iiu im- imb imc ime imi imm imn imu in- inb inc ine ini inm inn inr inu ir- irb irc ire iri irm irn irr iru iu- iub iuc iue iui ium iur m-r mbb mbc mbe mbi mbm mbr mbu mc- mcb mcc mce mci mcm mcn mcr mcu meb mec mee mei mem men mer meu mi- mib mic mie mii mim min mir miu mmb mmc mme mmi mmm mmn mmr mmu mnb mnc mne mni mnm mnn mnr mnu mrb mrc mre mri mrm mrn mrr mru mub muc mue mui mum mun mur muu n-i nbb nbc nbe nbi nbm nbn nbr nbu ncb ncc nce nci ncm ncn ncr ncu ne- neb nec nee nei nem nen ner neu nib nic nie nii nim nin nir niu nmb nmc nme nmi nmm nmn nmr nmu nnb nnc nne nni nnm nnn nnu nrb nrc nre nri nrm nrn nrr nru nub nuc nue nui num nun nur nuu rbb rbc rbe rbi rbm rbn rbr rbu rcb rcc rce rci rcm rcn rcr rcu re- reb rec ree rei rem ren rer reu rib ric rie rii rim rin rir rmb rmc rme rmi rmm rmn rmr rnb rnc rni rnm rnn rnr rnu rrb rrc rri rrm rrn rrr rru rub ruc rue rui rum run rur ruu ubb ubc ube ubi ubn ubr ubu ucb ucc uce uci ucm ucn ucr ucu ueb uec uee uei uem uen uer uib uic uie uii uim uin uir uiu um- umb umc ume umi umm umn umr umu un- unb unc une uni unm unn unr unu ur- urb urc ure uri urm urn urr uru uuc uue uum uun uur uuu