b-u bbb bbd bbg bbk bbn bbo bbs bbu bdb bdd bdg bdk bdo bds bdu bgb bgd bgg bgk bgn bgo bgs bgu bkb bkg bkk bkn bko bks bnb bnd bng bnk bnn bno bns bnu bob bod bog bok bon boo bos bou bsb bsd bsg bsk bsn bso bss bsu bub bud bug buk bun buo bus buu dbb dbd dbg dbk dbn dbo dbs dbu ddb ddd ddg ddk ddn ddo dds ddu dgd dgg dgk dgn dgs dgu dkb dkg dkk dko dks dku dnb dnd dng dnk dnn dno dns dob dod dog dok don doo dos dou dsb dsd dsg dsk dsn dso dss dsu dub dud dug duk dun duo dus g-d gbd gbg gbk gbn gbo gbs gbu gdb gdd gdk gdn gdo gds gdu ggb ggd ggg ggn ggo ggs ggu gkb gkd gkn gko gks gnb gnd gnn gno gns gnu gob god gog gok gon goo gos gou gsb gsd gsg gsk gsn gso gss gsu gu- gub gud gug guk gun guo gus guu kbb kbd kbk kbn kbo kbs kbu kdb kdg kdk kdo kds kdu kgb kgd kgo kgs kgu kkb kkk kkn kks kku kn- knd kng knk knn kno knu kob kod kog kok kon koo kos kou ksb ksd ksg ksk ksn kso kss ksu kub kud kug kuk kun kus kuu nbb nbd nbg nbk nbn nbo nbs nbu ndb ndd ndg ndk ndn ndo nds ndu ngb ngd ngg ngk ngn ngo ngs ngu nkk nkn nko nks nku nnb nng nnk nnn nno nns nnu no- nob nod nog nok non noo nos nou nsb nsd nsg nsk nsn nso nss nsu nub nud nug nuk nun nuo nus nuu ob- obb obd obg obk obn obo obs obu odb odd odg odn odo ods odu ogd ogg ogn ogo ogs okb okd okg okk oko oks oku on- onb ond ong onk onn ono ons onu oo- oob ood oog ook oon ooo oos os- osb osd osg osk osn oso oss osu ou- oud ouk oun ouo ous sbb sbd sbg sbk sbn sbo sbs sbu sdb sdd sdg sdk sdn sdo sds sdu sgb sgd sgg sgk sgn sgo sgs sgu sk- skb skd skg skk sko sks sku snb snd sng snk snn sno sns snu sob sod sog sok son soo sos sou ss- ssb ssd ssg ssk ssn sso sss ssu sub sud sug suk sun suo sus suu ubb ubg ubk ubn ubo ubs ubu udb udd udg udk udn udo uds udu ugb ugg ugk ugn ugo ugs ugu ukb ukk ukn uku un- unb und ung unk unn uno uns unu uob uod uog uok uon uoo uos usb usd usg usk usn uso uss usu uug uun uus uuu