b-u bbb bbd bbg bbo bbu bby bdb bdd bdg bdo bdu bdy bgb bgd bgg bgo bgu bob bod bog boo bou boy bub bud bug buo buu buy by- byd byg byo byu dbb dbd dbg dbo dbu dby ddb ddd ddg ddo ddu ddy dgd dgg dgu dob dod dog doo dou doy dub dud dug duo duy dy- dyb dyd dyo dyu dyy g-d gbd gbg gbo gbu gby gdb gdd gdo gdu ggb ggd ggg ggo ggu gob god gog goo gou goy gu- gub gud gug guo guu guy gy- gyb gyd gyo ob- obb obd obg obo obu oby odb odd odg odo odu ogd ogg ogo ogy oo- oob ood oog ooo ou- oud ouo oyd oyo ubb ubg ubo ubu uby udb udd udg udo udu ugb ugg ugo ugu uob uod uog uoo uug uuu uyo uyu ybg yby ydg ydo ydy ygo yob yod yog yoo you yoy yud yug yuo yuu yuy yyb yyg yyu yyy