-er b-u bbb bbc bbe bbh bbm bbo bbr bbu bcb bcc bce bch bcm bco bcr bcu be- beb bec bee beh bem beo ber beu bhb bhc bhe bhh bhm bho bhr bhu bmb bmc bme bmh bmm bmo bmr bmu bob boc boe boh bom boo bor bou brb bre brh brm bro brr bru bub buc bue buh bum buo bur buu c-- cbb cbc cbe cbh cbm cbo cbr cbu ccb ccc cce cch ccm cco ccr ccu ce- ceb cec cee ceh cem ceo cer ceu ch- chb chc che chh chm cho chr chu cmb cmc cme cmh cmm cmo cmr cmu co- cob coc coe coh com coo cor cou crb crc cre crh crm cro crr cru cub cuc cue cuh cum cuo cur cuu ebb ebc ebe ebh ebm ebo ebr ebu ec- ecb ecc ece ech ecm eco ecr ecu eeb eec eee eem eeo eer ehb ehc ehe ehh ehm eho ehr ehu em- emb emc eme emh emm emo emr emu eo- eob eoc eoe eoh eom eoo eor eou erb erc ere erh erm ero err eru eu- eub euc eue eur hbb hbc hbe hbh hbm hbo hbr hbu hcb hcc hce hch hcm hco hcr he- heb hec hee heh hem heo her heu hhb hhc hhe hhh hhm hho hhr hhu hmb hmc hme hmh hmm hmo hmr hmu hob hoc hoe hoh hom hoo hor hou hr- hrb hrc hre hrh hrm hro hrr hru hub huc hue huh hum huo hur huu m-o m-r mbb mbc mbe mbh mbm mbo mbr mbu mc- mcb mcc mce mch mcm mco mcr mcu meb mec mee meh mem meo mer meu mhc mhh mhm mho mhr mhu mmb mmc mme mmh mmm mmo mmr mmu mob moc moe moh mom moo mor mou mrb mrc mre mrh mrm mro mrr mru mub muc mue muh mum mur muu ob- obb obc obe obh obm obo obr obu oc- ocb occ och ocm oco ocr ocu oeb oec oee oeh oem oeo oer ohc ohe ohh ohm oho ohr ohu om- omb omc ome omh omm omo omr omu oo- oob ooc ooh oom ooo oor or- orb orc ore orh orm oro orr oru ou- ouc oue ouh oum ouo our rbb rbc rbe rbh rbm rbo rbr rbu rcb rcc rce rch rcm rco rcr rcu re- reb rec ree reh rem reo rer reu rh- rhb rhc rhe rhh rhm rho rhr rhu rmb rmc rme rmh rmm rmo rmr rob roc roe roh rom roo ror rou rrb rrc rrh rrm rrr rru rub ruc rue ruh rum ruo rur ruu ubb ubc ube ubh ubo ubr ubu ucb ucc uce uch ucm uco ucr ucu ueb uec uee ueh uem uer uhb uhc uhe uhh uhm uho uhr uhu um- umb umc ume umh umm umo umr umu uob uoc uoe uom uoo uor ur- urb urc ure urm uro urr uru uuc uue uum uur uuu