b-u bbb bbc bbg bbh bbm bbn bbr bbu bcb bcc bcg bch bcm bcn bcr bcu bgb bgc bgg bgh bgm bgn bgr bgu bhb bhc bhg bhh bhm bhr bhu bmb bmc bmg bmh bmm bmn bmr bmu bnb bnc bng bnn bnr bnu brb brg brh brm brn brr bru bub buc bug buh bum bun bur buu c-- cbb cbc cbg cbh cbm cbn cbr cbu ccb ccc ccg cch ccm ccn ccr ccu cgb cgc cgg cgh cgm cgn cgr cgu ch- chb chc chg chh chm chn chr chu cmb cmc cmg cmh cmm cmn cmr cmu cn- cnb cnc cng cnh cnm cnn cnr cnu crb crc crg crh crm crn crr cru cub cuc cug cuh cum cun cur cuu gbc gbg gbh gbm gbn gbr gbu gcb gcc gcg gch gcm gcn gcr gcu ggb ggc ggg ggh ggm ggn ggr ggu ghb ghc ghg ghh ghn ghr gmb gmc gmg gmh gmm gmn gmr gnb gnc gnm gnn gnr gnu grb grc grg grh grm grn grr gru gu- gub guc gug gum gun gur guu hbb hbc hbg hbh hbm hbn hbr hbu hcb hcc hcg hch hcm hcn hcr hgb hgc hgg hgh hgm hgn hgr hgu hhb hhc hhg hhh hhm hhn hhr hhu hmb hmc hmg hmh hmm hmr hmu hnb hnc hng hnh hnn hnu hr- hrb hrc hrg hrh hrm hrn hrr hru hub huc hug huh hum hun hur huu m-r mbb mbc mbg mbh mbm mbr mbu mc- mcb mcc mcg mch mcm mcn mcr mcu mgb mgc mgh mgm mgn mgr mgu mhc mhg mhh mhm mhn mhr mhu mmb mmc mmg mmh mmm mmn mmr mmu mnb mnc mng mnm mnn mnr mnu mrb mrc mrg mrh mrm mrn mrr mru mub muc mug muh mum mun mur muu nbb nbc nbg nbm nbn nbr nbu ncb ncc ncg nch ncm ncn ncr ncu ngb ngc ngg ngh ngm ngn ngu nhb nhc nhg nhh nhm nhn nhr nhu nmb nmc nmg nmh nmm nmn nmr nmu nnb nnc nng nnh nnm nnn nnu nrb nrc nrg nrm nrn nrr nru nub nuc nug nuh num nun nur nuu rbb rbc rbg rbh rbm rbn rbr rbu rcb rcc rcg rch rcm rcn rcr rcu rgb rgc rgg rgh rgn rgr rh- rhb rhc rhg rhh rhm rhn rhr rhu rmb rmc rmg rmh rmm rmn rmr rnb rnc rng rnh rnm rnn rnr rnu rrb rrc rrg rrh rrm rrn rrr rru rub ruc rug ruh rum run rur ruu ubb ubc ubg ubh ubn ubr ubu ucb ucc ucg uch ucm ucn ucr ucu ugb ugc ugg ugh ugm ugn ugr ugu uhb uhc uhh uhm uhr uhu um- umb umc umg umh umm umn umr umu un- unb unc ung unh unm unn unr unu ur- urb urc urg urm urn urr uru uuc uug uum uun uur uuu