-th b-u bbb bbc bbh bbm bbo bbt bbu bcb bcc bch bcm bco bct bcu bhb bhc bhh bhm bho bht bhu bmb bmc bmh bmm bmo bmt bmu bob boc boh bom boo bot bou btb btc bth btm bto btt btu bub buc buh bum buo but buu c-- cbb cbc cbh cbm cbo cbt cbu ccb ccc cch ccm cco cct ccu ch- chb chc chh chm cho cht chu cmb cmc cmh cmm cmo cmt cmu co- cob coc coh com coo cot cou ctb ctc cth ctm cto ctt ctu cub cuc cuh cum cuo cut cuu hbb hbc hbh hbm hbo hbt hbu hcb hcc hch hcm hco hct hhb hhc hhh hhm hho hht hhu hmb hmc hmh hmm hmo hmt hmu hob hoc hoh hom hoo hot hou htb htc hth htm hto htt hub huc huh hum huo hut huu m-o mbb mbc mbh mbm mbo mbt mbu mc- mcb mcc mch mcm mco mct mcu mhc mhh mhm mho mht mhu mmb mmc mmh mmm mmo mmt mmu mob moc moh mom moo mot mou mtb mtc mth mtm mto mtt mtu mub muc muh mum mut muu ob- obb obc obh obm obo obt obu oc- ocb occ och ocm oco oct ocu ohc ohh ohm oho oht ohu om- omb omc omh omm omo omt omu oo- oob ooc ooh oom ooo oot ot- otb otc oth otm oto ott otu ou- ouc ouh oum ouo out tbb tbc tbh tbm tbo tbt tbu tcb tcc tch tcm tco tct tcu th- thb thc thh thm tho tht thu tmb tmc tmh tmm tmo tmt tmu to- tob toc toh tom too tot tou ttb ttc tth ttm tto ttt ttu tub tuc tuh tum tuo tut tuu ubb ubc ubh ubo ubt ubu ucb ucc uch ucm uco uct ucu uhb uhc uhh uhm uho uht uhu um- umb umc umh umm umo umt umu uob uoc uom uoo uot utb utc uth utm uto utt utu uuc uum uut uuu