-er bbb bbc bbe bbh bbk bbm bbr bbs bcb bcc bce bch bck bcm bcr bcs be- beb bec bee beh bek bem ber bes bhb bhc bhe bhh bhk bhm bhr bhs bkb bkc bke bkk bkm bkr bks bmb bmc bme bmh bmk bmm bmr bms brb bre brh brk brm brr brs bsb bsc bse bsh bsk bsm bsr bss c-- cbb cbc cbe cbh cbk cbm cbr cbs ccb ccc cce cch cck ccm ccr ccs ce- ceb cec cee ceh cek cem cer ces ch- chb chc che chh chk chm chr chs ckb ckc ckh ckm cks cmb cmc cme cmh cmk cmm cmr cms crb crc cre crh crk crm crr crs csb csc cse csh csk csm csr css ebb ebc ebe ebh ebk ebm ebr ebs ec- ecb ecc ece ech eck ecm ecr ecs eeb eec eee eek eem eer ees ehb ehc ehe ehh ehm ehr ehs ekb ekc eke ekh ekr eks em- emb emc eme emh emk emm emr ems erb erc ere erh erk erm err ers es- esb esc ese esh esk esm esr ess hbb hbc hbe hbh hbk hbm hbr hbs hcb hcc hce hch hck hcm hcr hcs he- heb hec hee heh hek hem her hes hhb hhc hhe hhh hhk hhm hhr hhs hkb hkh hkk hkm hkr hks hmb hmc hme hmh hmk hmm hmr hms hr- hrb hrc hre hrh hrk hrm hrr hrs hsb hsc hse hsh hsk hsm hsr hss kbb kbc kbe kbh kbk kbm kbr kbs kcb kcc kce kch kck kcm kcr kcs ke- keb kec kee keh kek kem ker kes khe khh khk khm khr khs kkb kkc kke kkh kkk kkm kkr kks kmb kmc kme kmh kmk kmm kms krc krk krr krs ksb ksc kse ksh ksk ksm ksr kss m-r mbb mbc mbe mbh mbk mbm mbr mbs mc- mcb mcc mce mch mck mcm mcr mcs meb mec mee meh mek mem mer mes mhc mhh mhk mhm mhr mhs mkb mkc mke mkh mkk mkm mkr mks mmb mmc mme mmh mmk mmm mmr mms mrb mrc mre mrh mrk mrm mrr mrs msb msc mse msh msk msm msr mss rbb rbc rbe rbh rbk rbm rbr rbs rcb rcc rce rch rcm rcr rcs re- reb rec ree reh rek rem rer res rh- rhb rhc rhe rhh rhm rhr rhs rkb rkc rke rkk rkm rks rmb rmc rme rmh rmm rmr rms rrb rrc rrh rrk rrm rrr rrs rsb rsc rse rsh rsk rsm rsr rss sbb sbc sbe sbh sbk sbm sbr sbs scb scc sce sch sck scm scr scs se- seb sec see seh sek sem ser ses sh- shb shc she shh shk shm shr shs sk- skb skc ske skh skk skm skr sks smb smc sme smh smk smm smr sms sr- srb src sre srh srk srm srr srs ss- ssb ssc sse ssh ssk ssm ssr sss