bbb bbc bbh bbn bbo bbr bbs bby bcb bcc bch bcn bco bcr bcs bcy bhb bhc bhh bho bhr bhs bnb bnc bnn bno bnr bns bob boc boh bon boo bor bos boy brb brh brn bro brr brs bry bsb bsc bsh bsn bso bsr bss bsy by- byc byh byn byo byr bys c-- cbb cbc cbh cbn cbo cbr cbs cby ccb ccc cch ccn cco ccr ccs ch- chb chc chh chn cho chr chs chy cn- cnb cnc cnh cnn cno cnr cns cny co- cob coc coh con coo cor cos coy crb crc crh crn cro crr crs cry csb csc csh csn cso csr css csy cyb cyc cyn cyo cyr cys hbb hbc hbh hbn hbo hbr hbs hby hcb hcc hch hcn hco hcr hcs hcy hhb hhc hhh hhn hho hhr hhs hhy hnb hnc hnh hnn hno hns hny hob hoc hoh hon hoo hor hos hoy hr- hrb hrc hrh hrn hro hrr hrs hsb hsc hsh hsn hsr hss hsy hy- hyb hyc hyh hyn hyo hyr hys hyy nbb nbc nbn nbo nbr nbs ncb ncc nch ncn nco ncr ncs nhb nhc nhh nhn nhr nhs nhy nnb nnc nnh nnn nno nns no- nob noc noh non noo nor nos noy nrb nrc nrn nro nrr nrs nry nsb nsc nsh nsn nso nsr nss nsy nyc nyn nyo nys nyy ob- obb obc obh obn obo obr obs oby oc- ocb occ och ocn oco ocr ocs ohc ohh ohn oho ohr ohs on- onb onc onh onn ono onr ons ony oo- oob ooc ooh oon ooo oor oos or- orb orc orh orn oro orr ors ory os- osb osc osh osn oso osr oss oyo oys rbb rbc rbh rbn rbo rbr rbs rcb rcc rch rcn rco rcr rcs rh- rhb rhc rhh rhn rho rhr rhs rnb rnc rnh rnn rno rnr rns rny rob roc roh ron roo ror ros roy rrb rrc rrh rrn rrr rrs rsb rsc rsh rsn rso rsr rss ry- ryc ryn ryo ryr rys ryy sbb sbc sbh sbn sbo sbr sbs sby scb scc sch scn sco scr scs sh- shb shc shh shn sho shr shs shy snb snc snn sno snr sns sny sob soc soh son soo sor sos soy sr- srb src srh srn sro srr srs sry ss- ssb ssc ssh ssn sso ssr sss sy- syb syc syh syn syr sys ybc ybr ybs yby ycc ych yco ycs ycy yhc yhs ynn yns yny yob yoc yon yoo yor yos yoy yrc yrn yro yrs ysb ysc yso ysr yss ysy yyb yyc yys yyy