b-u bbb bbc bbh bbk bbn bbu bcb bcc bch bck bcn bcu bhb bhc bhh bhk bhu bkb bkc bkk bkn bnb bnc bnk bnn bnu bub buc buh buk bun buu c-- cbb cbc cbh cbk cbn cbu ccb ccc cch cck ccn ccu ch- chb chc chh chk chn chu ckb ckc ckh cn- cnb cnc cnh cnn cnu cub cuc cuh cuk cun cuu hbb hbc hbh hbk hbn hbu hcb hcc hch hck hcn hhb hhc hhh hhk hhn hhu hkb hkh hkk hkn hku hnb hnc hnh hnk hnn hnu hub huc huh huk hun huu kbb kbc kbh kbk kbn kbu kcb kcc kch kck kcn kcu khh khk khn khu kkb kkc kkh kkk kkn kku kn- knc knk knn knu kub kuc kuh kuk kun kuu nbb nbc nbk nbn nbu ncb ncc nch nck ncn ncu nhb nhc nhh nhk nhn nhu nkc nkk nkn nku nnb nnc nnh nnk nnn nnu nub nuc nuh nuk nun nuu ubb ubc ubh ubk ubn ubu ucb ucc uch uck ucn ucu uhb uhc uhh uhu ukb ukc ukk ukn uku un- unb unc unh unk unn unu uuc uun uuu