b-u bbb bbd bbo bbr bbs bbu bbw bdb bdd bdo bdr bds bdu bdw bob bod boo bor bos bou bow brb brd bro brr brs bru brw bsb bsd bso bsr bss bsu bsw bub bud buo bur bus buu buw bwb bwd bwo bwr bws bwu dbb dbd dbo dbr dbs dbu ddb ddd ddo ddr dds ddu ddw dob dod doo dor dos dou dow drb drd dro drr drs dru drw dsb dsd dso dsr dss dsu dsw dub dud duo dur dus dwb dwo dwr dws dwu dww ob- obb obd obo obr obs obu obw odb odd odo odr ods odu oo- oob ood ooo oor oos oow or- orb ord oro orr ors oru os- osb osd oso osr oss osu osw ou- oud ouo our ous owb owd owo ows owu oww rbb rbd rbo rbr rbs rbu rbw rdb rdd rdo rdr rds rdu rob rod roo ror ros rou row rrb rrd rrr rrs rru rsb rsd rso rsr rss rsu rsw rub rud ruo rur rus ruu rwb rwd rwr rws rwu sbb sbd sbo sbr sbs sbu sbw sdb sdd sdo sdr sds sdu sdw sob sod soo sor sos sou sow sr- srb srd sro srr srs srw ss- ssb ssd sso ssr sss ssu ssw sub sud suo sur sus suu suw swb swd swo swr sws swu ubb ubo ubr ubs ubu ubw udb udd udo udr uds udu uob uod uoo uor uos uow ur- urb urd uro urr urs uru urw usb usd uso usr uss usu usw uur uus uuu uwb uwr uws uww wbb wbd wbo wbr wbs wbw wdb wdr wds wdu wob wod woo wor wos wou wow wr- wrd wro wrr wrs wru wrw wsb wsd wso wsr wss wsu wsw wub wud wuo wur wus wwd wwo wwu www