bbb bbd bbn bbo bby bdb bdd bdo bdy bnb bnd bnn bno bob bod bon boo boy by- byd byn byo dbb dbd dbn dbo dby ddb ddd ddn ddo ddy dnb dnd dnn dno dny dob dod don doo doy dy- dyb dyd dyn dyo dyy nbb nbd nbn nbo ndb ndd ndn ndo ndy nnb nnn nno no- nob nod non noo noy nyd nyn nyo nyy ob- obb obd obn obo oby odb odd odn odo on- onb ond onn ono ony oo- oob ood oon ooo oyd oyo yby ydn ydo ydy ynd ynn yny yob yod yon yoo yoy yyb yyy