bbb bbd bbg bbo bbr bbs bdb bdd bdg bdo bdr bds bgb bgd bgg bgo bgr bgs bob bod bog boo bor bos brb brd brg bro brr brs bsb bsd bsg bso bsr bss dbb dbd dbg dbo dbr dbs ddb ddd ddg ddo ddr dds dgd dgg dgr dgs dob dod dog doo dor dos drb drd drg dro drr drs dsb dsd dsg dso dsr dss g-d gbd gbg gbo gbr gbs gdb gdd gdo gdr gds ggb ggd ggg ggo ggr ggs gob god gog goo gor gos grb grd grg gro grr grs gsb gsd gsg gso gsr gss ob- obb obd obg obo obr obs odb odd odg odo odr ods ogd ogg ogo ogs oo- oob ood oog ooo oor oos or- orb ord org oro orr ors os- osb osd osg oso osr oss rbb rbd rbg rbo rbr rbs rdb rdd rdg rdo rdr rds rgb rgd rgg rgo rgr rgs rob rod rog roo ror ros rrb rrd rrg rrr rrs rsb rsd rsg rso rsr rss sbb sbd sbg sbo sbr sbs sdb sdd sdg sdo sdr sds sgb sgd sgg sgo sgr sgs sob sod sog soo sor sos sr- srb srd srg sro srr srs ss- ssb ssd ssg sso ssr sss