-er b-u bbb bbc bbe bbh bbm bbn bbr bbu bcb bcc bce bch bcm bcn bcr bcu be- beb bec bee beh bem ben ber beu bhb bhc bhe bhh bhm bhr bhu bmb bmc bme bmh bmm bmn bmr bmu bnb bnc bne bnn bnr bnu brb bre brh brm brn brr bru bub buc bue buh bum bun bur buu c-- cbb cbc cbe cbh cbm cbn cbr cbu ccb ccc cce cch ccm ccn ccr ccu ce- ceb cec cee ceh cem cen cer ceu ch- chb chc che chh chm chn chr chu cmb cmc cme cmh cmm cmn cmr cmu cn- cnb cnc cne cnh cnm cnn cnr cnu crb crc cre crh crm crn crr cru cub cuc cue cuh cum cun cur cuu ebb ebc ebe ebh ebm ebn ebr ebu ec- ecb ecc ece ech ecm ecn ecr ecu eeb eec eee eem een eer ehb ehc ehe ehh ehm ehn ehr ehu em- emb emc eme emh emm emn emr emu en- enb enc ene enh enm enn enr enu erb erc ere erh erm ern err eru eu- eub euc eue eun eur hbb hbc hbe hbh hbm hbn hbr hbu hcb hcc hce hch hcm hcn hcr he- heb hec hee heh hem hen her heu hhb hhc hhe hhh hhm hhn hhr hhu hmb hmc hme hmh hmm hmr hmu hnb hnc hne hnh hnn hnu hr- hrb hrc hre hrh hrm hrn hrr hru hub huc hue huh hum hun hur huu m-r mbb mbc mbe mbh mbm mbr mbu mc- mcb mcc mce mch mcm mcn mcr mcu meb mec mee meh mem men mer meu mhc mhh mhm mhn mhr mhu mmb mmc mme mmh mmm mmn mmr mmu mnb mnc mne mnm mnn mnr mnu mrb mrc mre mrh mrm mrn mrr mru mub muc mue muh mum mun mur muu nbb nbc nbe nbm nbn nbr nbu ncb ncc nce nch ncm ncn ncr ncu ne- neb nec nee neh nem nen ner neu nhb nhc nhe nhh nhm nhn nhr nhu nmb nmc nme nmh nmm nmn nmr nmu nnb nnc nne nnh nnm nnn nnu nrb nrc nre nrm nrn nrr nru nub nuc nue nuh num nun nur nuu rbb rbc rbe rbh rbm rbn rbr rbu rcb rcc rce rch rcm rcn rcr rcu re- reb rec ree reh rem ren rer reu rh- rhb rhc rhe rhh rhm rhn rhr rhu rmb rmc rme rmh rmm rmn rmr rnb rnc rnh rnm rnn rnr rnu rrb rrc rrh rrm rrn rrr rru rub ruc rue ruh rum run rur ruu ubb ubc ube ubh ubn ubr ubu ucb ucc uce uch ucm ucn ucr ucu ueb uec uee ueh uem uen uer uhb uhc uhe uhh uhm uhr uhu um- umb umc ume umh umm umn umr umu un- unb unc une unh unm unn unr unu ur- urb urc ure urm urn urr uru uuc uue uum uun uur uuu