-er b-u bbb bbc bbe bbh bbk bbm bbr bbu bcb bcc bce bch bck bcm bcr bcu be- beb bec bee beh bek bem ber beu bhb bhc bhe bhh bhk bhm bhr bhu bkb bkc bke bkk bkm bkr bmb bmc bme bmh bmk bmm bmr bmu brb bre brh brk brm brr bru bub buc bue buh buk bum bur buu c-- cbb cbc cbe cbh cbk cbm cbr cbu ccb ccc cce cch cck ccm ccr ccu ce- ceb cec cee ceh cek cem cer ceu ch- chb chc che chh chk chm chr chu ckb ckc ckh ckm cmb cmc cme cmh cmk cmm cmr cmu crb crc cre crh crk crm crr cru cub cuc cue cuh cuk cum cur cuu ebb ebc ebe ebh ebk ebm ebr ebu ec- ecb ecc ece ech eck ecm ecr ecu eeb eec eee eek eem eer ehb ehc ehe ehh ehm ehr ehu ekb ekc eke ekh ekr eku em- emb emc eme emh emk emm emr emu erb erc ere erh erk erm err eru eu- eub euc eue eur hbb hbc hbe hbh hbk hbm hbr hbu hcb hcc hce hch hck hcm hcr he- heb hec hee heh hek hem her heu hhb hhc hhe hhh hhk hhm hhr hhu hkb hkh hkk hkm hkr hku hmb hmc hme hmh hmk hmm hmr hmu hr- hrb hrc hre hrh hrk hrm hrr hru hub huc hue huh huk hum hur huu kbb kbc kbe kbh kbk kbm kbr kbu kcb kcc kce kch kck kcm kcr kcu ke- keb kec kee keh kek kem ker khe khh khk khm khr khu kkb kkc kke kkh kkk kkm kkr kku kmb kmc kme kmh kmk kmm kmu krc krk krr kru kub kuc kue kuh kuk kum kur kuu m-r mbb mbc mbe mbh mbk mbm mbr mbu mc- mcb mcc mce mch mck mcm mcr mcu meb mec mee meh mek mem mer meu mhc mhh mhk mhm mhr mhu mkb mkc mke mkh mkk mkm mkr mku mmb mmc mme mmh mmk mmm mmr mmu mrb mrc mre mrh mrk mrm mrr mru mub muc mue muh muk mum mur muu rbb rbc rbe rbh rbk rbm rbr rbu rcb rcc rce rch rcm rcr rcu re- reb rec ree reh rek rem rer reu rh- rhb rhc rhe rhh rhm rhr rhu rkb rkc rke rkk rkm rku rmb rmc rme rmh rmm rmr rrb rrc rrh rrk rrm rrr rru rub ruc rue ruh ruk rum rur ruu ubb ubc ube ubh ubk ubr ubu ucb ucc uce uch uck ucm ucr ucu ueb uec uee ueh uem uer uhb uhc uhe uhh uhm uhr uhu ukb ukc uke ukk ukr uku um- umb umc ume umh umm umr umu ur- urb urc ure urk urm urr uru uuc uue uum uur uuu