bbb bbc bbd bbh bbo bbr bby bcb bcc bcd bch bco bcr bcy bdb bdc bdd bdh bdo bdr bdy bhb bhc bhd bhh bho bhr bob boc bod boh boo bor boy brb brd brh bro brr bry by- byc byd byh byo byr c-- cbb cbc cbd cbh cbo cbr cby ccb ccc ccd cch cco ccr cdb cdc cdd cdh cdo cdr cdy ch- chb chc chd chh cho chr chy co- cob coc cod coh coo cor coy crb crc crd crh cro crr cry cyb cyc cyd cyo cyr dbb dbc dbd dbh dbo dbr dby dcb dcc dcd dco dcr ddb ddc ddd ddh ddo ddr ddy dh- dhb dhc dhd dhh dho dhr dob doc dod doh doo dor doy drb drc drd dro drr dry dy- dyb dyc dyd dyo dyr dyy hbb hbc hbd hbh hbo hbr hby hcb hcc hcd hch hco hcr hcy hdb hdc hdd hdh hdo hdr hdy hhb hhc hhd hhh hho hhr hhy hob hoc hod hoh hoo hor hoy hr- hrb hrc hrd hrh hro hrr hy- hyb hyc hyd hyh hyo hyr hyy ob- obb obc obd obh obo obr oby oc- ocb occ ocd och oco ocr odb odc odd odh odo odr ohc ohd ohh oho ohr oo- oob ooc ood ooh ooo oor or- orb orc ord orh oro orr ory oyd oyo rbb rbc rbd rbh rbo rbr rcb rcc rcd rch rco rcr rdb rdc rdd rdh rdo rdr rdy rh- rhb rhc rhd rhh rho rhr rob roc rod roh roo ror roy rrb rrc rrd rrh rrr ry- ryc ryd ryo ryr ryy ybc ybr yby ycc ycd ych yco ycy ydo ydy yhc yob yoc yod yoo yor yoy yrc yro yyb yyc yyy