b-u bbb bbc bbd bbh bbk bbn bbo bbs bbu bcb bcc bcd bch bck bcn bco bcs bcu bdb bdc bdd bdh bdk bdo bds bdu bhb bhc bhd bhh bhk bho bhs bhu bkb bkc bkk bkn bko bks bnb bnc bnd bnk bnn bno bns bnu bob boc bod boh bok bon boo bos bou bsb bsc bsd bsh bsk bsn bso bss bsu bub buc bud buh buk bun buo bus buu c-- cbb cbc cbd cbh cbk cbn cbo cbs cbu ccb ccc ccd cch cck ccn cco ccs ccu cdb cdc cdd cdh cdk cdn cdo cds cdu ch- chb chc chd chh chk chn cho chs chu ckb ckc ckd ckh cko cks cn- cnb cnc cnd cnh cnn cno cns cnu co- cob coc cod coh cok con coo cos cou csb csc csd csh csk csn cso css csu cub cuc cud cuh cuk cun cuo cus cuu dbb dbc dbd dbh dbk dbn dbo dbs dbu dcb dcc dcd dck dcn dco dcs dcu ddb ddc ddd ddh ddk ddn ddo dds ddu dh- dhb dhc dhd dhh dhk dho dhs dhu dkb dkc dkk dko dks dku dnb dnc dnd dnh dnk dnn dno dns dob doc dod doh dok don doo dos dou dsb dsc dsd dsh dsk dsn dso dss dsu dub duc dud duh duk dun duo dus hbb hbc hbd hbh hbk hbn hbo hbs hbu hcb hcc hcd hch hck hcn hco hcs hdb hdc hdd hdh hdk hdn hdo hds hdu hhb hhc hhd hhh hhk hhn hho hhs hhu hkb hkd hkh hkk hkn hko hks hku hnb hnc hnd hnh hnk hnn hno hns hnu hob hoc hod hoh hok hon hoo hos hou hsb hsc hsd hsh hsk hsn hss hsu hub huc hud huh huk hun huo hus huu kbb kbc kbd kbh kbk kbn kbo kbs kbu kcb kcc kcd kch kck kcn kcs kcu kdb kdc kdh kdk kdo kds kdu khh khk khn kho khs khu kkb kkc kkh kkk kkn kks kku kn- knc knd knk knn kno knu kob koc kod koh kok kon koo kos kou ksb ksc ksd ksh ksk ksn kso kss ksu kub kuc kud kuh kuk kun kus kuu nbb nbc nbd nbk nbn nbo nbs nbu ncb ncc ncd nch nck ncn nco ncs ncu ndb ndc ndd ndh ndk ndn ndo nds ndu nhb nhc nhd nhh nhk nhn nhs nhu nkc nkk nkn nko nks nku nnb nnc nnh nnk nnn nno nns nnu no- nob noc nod noh nok non noo nos nou nsb nsc nsd nsh nsk nsn nso nss nsu nub nuc nud nuh nuk nun nuo nus nuu ob- obb obc obd obh obk obn obo obs obu oc- ocb occ ocd och ock ocn oco ocs ocu odb odc odd odh odn odo ods odu ohc ohd ohh ohn oho ohs ohu okb okc okd okk oko oks oku on- onb onc ond onh onk onn ono ons onu oo- oob ooc ood ooh ook oon ooo oos os- osb osc osd osh osk osn oso oss osu ou- ouc oud ouh ouk oun ouo ous sbb sbc sbd sbh sbk sbn sbo sbs sbu scb scc scd sch sck scn sco scs scu sdb sdc sdd sdh sdk sdn sdo sds sdu sh- shb shc shd shh shk shn sho shs shu sk- skb skc skd skh skk sko sks sku snb snc snd snk snn sno sns snu sob soc sod soh sok son soo sos sou ss- ssb ssc ssd ssh ssk ssn sso sss ssu sub suc sud suh suk sun suo sus suu ubb ubc ubh ubk ubn ubo ubs ubu ucb ucc ucd uch uck ucn uco ucs ucu udb udc udd udk udn udo uds udu uhb uhc uhd uhh uho uhs uhu ukb ukc ukk ukn uku un- unb unc und unh unk unn uno uns unu uob uoc uod uok uon uoo uos usb usc usd ush usk usn uso uss usu uuc uun uus uuu