b-u bbb bbc bbg bbh bbn bbo bbr bbs bbu bcb bcc bcg bch bcn bco bcr bcs bcu bgb bgc bgg bgh bgn bgo bgr bgs bgu bhb bhc bhg bhh bho bhr bhs bhu bnb bnc bng bnn bno bnr bns bnu bob boc bog boh bon boo bor bos bou brb brg brh brn bro brr brs bru bsb bsc bsg bsh bsn bso bsr bss bsu bub buc bug buh bun buo bur bus buu c-- cbb cbc cbg cbh cbn cbo cbr cbs cbu ccb ccc ccg cch ccn cco ccr ccs ccu cgb cgc cgg cgh cgn cgo cgr cgs cgu ch- chb chc chg chh chn cho chr chs chu cn- cnb cnc cng cnh cnn cno cnr cns cnu co- cob coc cog coh con coo cor cos cou crb crc crg crh crn cro crr crs cru csb csc csg csh csn cso csr css csu cub cuc cug cuh cun cuo cur cus cuu gbc gbg gbh gbn gbo gbr gbs gbu gcb gcc gcg gch gcn gco gcr gcs gcu ggb ggc ggg ggh ggn ggo ggr ggs ggu ghb ghc ghg ghh ghn gho ghr ghs gnb gnc gnn gno gnr gns gnu gob goc gog goh gon goo gor gos gou grb grc grg grh grn gro grr grs gru gsb gsc gsg gsn gso gsr gss gsu gu- gub guc gug gun guo gur gus guu hbb hbc hbg hbh hbn hbo hbr hbs hbu hcb hcc hcg hch hcn hco hcr hcs hgb hgc hgg hgh hgn hgo hgr hgs hgu hhb hhc hhg hhh hhn hho hhr hhs hhu hnb hnc hng hnh hnn hno hns hnu hob hoc hog hoh hon hoo hor hos hou hr- hrb hrc hrg hrh hrn hro hrr hrs hru hsb hsc hsg hsh hsn hsr hss hsu hub huc hug huh hun huo hur hus huu nbb nbc nbg nbn nbo nbr nbs nbu ncb ncc ncg nch ncn nco ncr ncs ncu ngb ngc ngg ngh ngn ngo ngs ngu nhb nhc nhg nhh nhn nhr nhs nhu nnb nnc nng nnh nnn nno nns nnu no- nob noc nog noh non noo nor nos nou nrb nrc nrg nrn nro nrr nrs nru nsb nsc nsg nsh nsn nso nsr nss nsu nub nuc nug nuh nun nuo nur nus nuu ob- obb obc obg obh obn obo obr obs obu oc- ocb occ ocg och ocn oco ocr ocs ocu ogc ogg ogh ogn ogo ogs ohc ohg ohh ohn oho ohr ohs ohu on- onb onc ong onh onn ono onr ons onu oo- oob ooc oog ooh oon ooo oor oos or- orb orc org orh orn oro orr ors oru os- osb osc osg osh osn oso osr oss osu ou- ouc ouh oun ouo our ous rbb rbc rbg rbh rbn rbo rbr rbs rbu rcb rcc rcg rch rcn rco rcr rcs rcu rgb rgc rgg rgh rgn rgo rgr rgs rh- rhb rhc rhg rhh rhn rho rhr rhs rhu rnb rnc rng rnh rnn rno rnr rns rnu rob roc rog roh ron roo ror ros rou rrb rrc rrg rrh rrn rrr rrs rru rsb rsc rsg rsh rsn rso rsr rss rsu rub ruc rug ruh run ruo rur rus ruu sbb sbc sbg sbh sbn sbo sbr sbs sbu scb scc scg sch scn sco scr scs scu sgb sgc sgg sgh sgn sgo sgr sgs sgu sh- shb shc shg shh shn sho shr shs shu snb snc sng snn sno snr sns snu sob soc sog soh son soo sor sos sou sr- srb src srg srh srn sro srr srs ss- ssb ssc ssg ssh ssn sso ssr sss ssu sub suc sug suh sun suo sur sus suu ubb ubc ubg ubh ubn ubo ubr ubs ubu ucb ucc ucg uch ucn uco ucr ucs ucu ugb ugc ugg ugh ugn ugo ugr ugs ugu uhb uhc uhh uho uhr uhs uhu un- unb unc ung unh unn uno unr uns unu uob uoc uog uon uoo uor uos ur- urb urc urg urn uro urr urs uru usb usc usg ush usn uso usr uss usu uuc uug uun uur uus uuu