-th b-u bbb bbh bbm bbr bbt bbu bhb bhh bhm bhr bht bhu bmb bmh bmm bmr bmt bmu brb brh brm brr brt bru btb bth btm btr btt btu bub buh bum bur but buu hbb hbh hbm hbr hbt hbu hhb hhh hhm hhr hht hhu hmb hmh hmm hmr hmt hmu hr- hrb hrh hrm hrr hrt hru htb hth htm htr htt hub huh hum hur hut huu m-r mbb mbh mbm mbr mbt mbu mhh mhm mhr mht mhu mmb mmh mmm mmr mmt mmu mrb mrh mrm mrr mrt mru mtb mth mtm mtr mtt mtu mub muh mum mur mut muu rbb rbh rbm rbr rbt rbu rh- rhb rhh rhm rhr rht rhu rmb rmh rmm rmr rmt rrb rrh rrm rrr rrt rru rtb rtm rtr rtt rtu rub ruh rum rur rut ruu tbb tbh tbm tbr tbt tbu th- thb thh thm thr tht thu tmb tmh tmm tmr tmt tmu trb trh trm trr trt tru ttb tth ttm ttr ttt ttu tub tuh tum tur tut tuu ubb ubh ubr ubt ubu uhb uhh uhm uhr uht uhu um- umb umh umm umr umt umu ur- urb urm urr urt uru utb uth utm utr utt utu uum uur uut uuu