-ic bbb bbc bbh bbi bbk bbo bbs bby bcb bcc bch bci bck bco bcs bcy bhb bhc bhh bhi bhk bho bhs bi- bib bic bih bii bik bio bis biy bkb bkc bkk bko bks bob boc boh boi bok boo bos boy bsb bsc bsh bsi bsk bso bss bsy by- byc byh byi byk byo bys c-- cbb cbc cbh cbi cbk cbo cbs cby ccb ccc cch cci cck cco ccs ch- chb chc chh chi chk cho chs chy ci- cib cic cih cii cik cio cis ckb ckc ckh cki cko cks cky co- cob coc coh coi cok coo cos coy csb csc csh csi csk cso css csy cyb cyc cyk cyo cys h-i hbb hbc hbh hbi hbk hbo hbs hby hcb hcc hch hci hck hco hcs hcy hhb hhc hhh hhi hhk hho hhs hhy hib hic hih hii hik hio his hkb hkh hki hkk hko hks hob hoc hoh hoi hok hoo hos hoy hsb hsc hsh hsi hsk hss hsy hy- hyb hyc hyh hyi hyo hys hyy ibb ibc ibh ibi ibk ibo ibs iby icb icc ich ici ick ico ics icy ihb ihc ihh ihi ihk iho ihs ihy iib iic iih iii iio iis ikb ikc iki ikk iko iks io- iob ioc ioh ioi ioo ios is- isb isc ish isi isk iso iss isy iyc iyo iys iyy kbb kbc kbh kbi kbk kbo kbs kcb kcc kch kci kck kcs khh khi khk kho khs kib kic kih kii kik kio kis kkb kkc kkh kki kkk kks kky kob koc koh koi kok koo kos koy ksb ksc ksh ksi ksk kso kss kyc kyo kys o-i ob- obb obc obh obi obk obo obs oby oc- ocb occ och oci ock oco ocs ohc ohh ohi oho ohs oib oic oii oik oio ois okb okc oki okk oko oks oo- oob ooc ooh ooi ook ooo oos os- osb osc osh osi osk oso oss oyi oyo oys sbb sbc sbh sbi sbk sbo sbs sby scb scc sch sci sck sco scs sh- shb shc shh shi shk sho shs shy sib sic sih sii sik sio sis sk- skb skc skh ski skk sko sks sky sob soc soh soi sok soo sos soy ss- ssb ssc ssh ssi ssk sso sss sy- syb syc syh syi syk sys ybc ybi ybs yby ycc ych yci yco ycs ycy yhc yhi yhs yih yii yio yis yki ykk yob yoc yoi yok yoo yos yoy ysb ysc ysi ysk yso yss ysy yyb yyc yys yyy