bbb bbc bbh bbn bbo bbr bby bcb bcc bch bcn bco bcr bcy bhb bhc bhh bho bhr bnb bnc bnn bno bnr bob boc boh bon boo bor boy brb brh brn bro brr bry by- byc byh byn byo byr c-- cbb cbc cbh cbn cbo cbr cby ccb ccc cch ccn cco ccr ch- chb chc chh chn cho chr chy cn- cnb cnc cnh cnn cno cnr cny co- cob coc coh con coo cor coy crb crc crh crn cro crr cry cyb cyc cyn cyo cyr hbb hbc hbh hbn hbo hbr hby hcb hcc hch hcn hco hcr hcy hhb hhc hhh hhn hho hhr hhy hnb hnc hnh hnn hno hny hob hoc hoh hon hoo hor hoy hr- hrb hrc hrh hrn hro hrr hy- hyb hyc hyh hyn hyo hyr hyy nbb nbc nbn nbo nbr ncb ncc nch ncn nco ncr nhb nhc nhh nhn nhr nhy nnb nnc nnh nnn nno no- nob noc noh non noo nor noy nrb nrc nrn nro nrr nry nyc nyn nyo nyy ob- obb obc obh obn obo obr oby oc- ocb occ och ocn oco ocr ohc ohh ohn oho ohr on- onb onc onh onn ono onr ony oo- oob ooc ooh oon ooo oor or- orb orc orh orn oro orr ory oyo rbb rbc rbh rbn rbo rbr rcb rcc rch rcn rco rcr rh- rhb rhc rhh rhn rho rhr rnb rnc rnh rnn rno rnr rny rob roc roh ron roo ror roy rrb rrc rrh rrn rrr ry- ryc ryn ryo ryr ryy ybc ybr yby ycc ych yco ycy yhc ynn yny yob yoc yon yoo yor yoy yrc yrn yro yyb yyc yyy