b-u bbb bbd bbn bbo bbu bby bdb bdd bdo bdu bdy bnb bnd bnn bno bnu bob bod bon boo bou boy bub bud bun buo buu buy by- byd byn byo byu dbb dbd dbn dbo dbu dby ddb ddd ddn ddo ddu ddy dnb dnd dnn dno dny dob dod don doo dou doy dub dud dun duo duy dy- dyb dyd dyn dyo dyu dyy nbb nbd nbn nbo nbu ndb ndd ndn ndo ndu ndy nnb nnn nno nnu no- nob nod non noo nou noy nub nud nun nuo nuu nuy nyd nyn nyo nyu nyy ob- obb obd obn obo obu oby odb odd odn odo odu on- onb ond onn ono onu ony oo- oob ood oon ooo ou- oud oun ouo oyd oyo ubb ubn ubo ubu uby udb udd udn udo udu un- unb und unn uno unu uny uob uod uon uoo uun uuu uyo uyu yby ydn ydo ydy ynd ynn ynu yny yob yod yon yoo you yoy yud yun yuo yuu yuy yyb yyu yyy