b-u bbb bbh bbk bbn bbs bbu bhb bhh bhk bhs bhu bkb bkk bkn bks bnb bnk bnn bns bnu bsb bsh bsk bsn bss bsu bub buh buk bun bus buu hbb hbh hbk hbn hbs hbu hhb hhh hhk hhn hhs hhu hkb hkh hkk hkn hks hku hnb hnh hnk hnn hns hnu hsb hsh hsk hsn hss hsu hub huh huk hun hus huu kbb kbh kbk kbn kbs kbu khh khk khn khs khu kkb kkh kkk kkn kks kku kn- knk knn knu ksb ksh ksk ksn kss ksu kub kuh kuk kun kus kuu nbb nbk nbn nbs nbu nhb nhh nhk nhn nhs nhu nkk nkn nks nku nnb nnh nnk nnn nns nnu nsb nsh nsk nsn nss nsu nub nuh nuk nun nus nuu sbb sbh sbk sbn sbs sbu sh- shb shh shk shn shs shu sk- skb skh skk sks sku snb snk snn sns snu ss- ssb ssh ssk ssn sss ssu sub suh suk sun sus suu ubb ubh ubk ubn ubs ubu uhb uhh uhs uhu ukb ukk ukn uku un- unb unh unk unn uns unu usb ush usk usn uss usu uun uus uuu