-th b-u bbb bbc bbg bbh bbt bbu bcb bcc bcg bch bct bcu bgb bgc bgg bgh bgt bgu bhb bhc bhg bhh bht bhu btb btc btg bth btt btu bub buc bug buh but buu c-- cbb cbc cbg cbh cbt cbu ccb ccc ccg cch cct ccu cgb cgc cgg cgh cgt cgu ch- chb chc chg chh cht chu ctb ctc ctg cth ctt ctu cub cuc cug cuh cut cuu gbc gbg gbh gbt gbu gcb gcc gcg gch gct gcu ggb ggc ggg ggh ggt ggu ghb ghc ghg ghh ght gtb gtc gtg gth gtt gtu gu- gub guc gug gut guu hbb hbc hbg hbh hbt hbu hcb hcc hcg hch hct hgb hgc hgg hgh hgt hgu hhb hhc hhg hhh hht hhu htb htc htg hth htt hub huc hug huh hut huu tbb tbc tbg tbh tbt tbu tcb tcc tcg tch tct tcu tgb tgc tgg tgh tgt tgu th- thb thc thg thh tht thu ttb ttc ttg tth ttt ttu tub tuc tug tuh tut tuu ubb ubc ubg ubh ubt ubu ucb ucc ucg uch uct ucu ugb ugc ugg ugh ugt ugu uhb uhc uhh uht uhu utb utc uth utt utu uuc uug uut uuu