-er -th bbb bbc bbe bbh bbm bbr bbt bcb bcc bce bch bcm bcr bct be- beb bec bee beh bem ber bet bhb bhc bhe bhh bhm bhr bht bmb bmc bme bmh bmm bmr bmt brb bre brh brm brr brt btb btc bte bth btm btr btt c-- cbb cbc cbe cbh cbm cbr cbt ccb ccc cce cch ccm ccr cct ce- ceb cec cee ceh cem cer cet ch- chb chc che chh chm chr cht cmb cmc cme cmh cmm cmr cmt crb crc cre crh crm crr crt ctb ctc cte cth ctm ctr ctt ebb ebc ebe ebh ebm ebr ebt ec- ecb ecc ece ech ecm ecr ect eeb eec eee eem eer eet ehb ehc ehe ehh ehm ehr eht em- emb emc eme emh emm emr emt erb erc ere erh erm err ert etb etc ete eth etm etr ett hbb hbc hbe hbh hbm hbr hbt hcb hcc hce hch hcm hcr hct he- heb hec hee heh hem her het hhb hhc hhe hhh hhm hhr hht hmb hmc hme hmh hmm hmr hmt hr- hrb hrc hre hrh hrm hrr hrt htb htc hte hth htm htr htt m-r mbb mbc mbe mbh mbm mbr mbt mc- mcb mcc mce mch mcm mcr mct meb mec mee meh mem mer met mhc mhh mhm mhr mht mmb mmc mme mmh mmm mmr mmt mrb mrc mre mrh mrm mrr mrt mtb mtc mte mth mtm mtr mtt rbb rbc rbe rbh rbm rbr rbt rcb rcc rce rch rcm rcr rct re- reb rec ree reh rem rer ret rh- rhb rhc rhe rhh rhm rhr rht rmb rmc rme rmh rmm rmr rmt rrb rrc rrh rrm rrr rrt rtb rtc rte rtm rtr rtt tbb tbc tbe tbh tbm tbr tbt tcb tcc tce tch tcm tcr tct te- teb tec tee teh tem ter tet th- thb thc the thh thm thr tht tmb tmc tme tmh tmm tmr tmt trb trc tre trh trm trr trt ttb ttc tte tth ttm ttr ttt