bbb bbd bbn bbo bbs bby bdb bdd bdo bds bdy bnb bnd bnn bno bns bob bod bon boo bos boy bsb bsd bsn bso bss bsy by- byd byn byo bys dbb dbd dbn dbo dbs dby ddb ddd ddn ddo dds ddy dnb dnd dnn dno dns dny dob dod don doo dos doy dsb dsd dsn dso dss dsy dy- dyb dyd dyn dyo dys dyy nbb nbd nbn nbo nbs ndb ndd ndn ndo nds ndy nnb nnn nno nns no- nob nod non noo nos noy nsb nsd nsn nso nss nsy nyd nyn nyo nys nyy ob- obb obd obn obo obs oby odb odd odn odo ods on- onb ond onn ono ons ony oo- oob ood oon ooo oos os- osb osd osn oso oss oyd oyo oys sbb sbd sbn sbo sbs sby sdb sdd sdn sdo sds sdy snb snd snn sno sns sny sob sod son soo sos soy ss- ssb ssd ssn sso sss sy- syb syd syn sys ybs yby ydn ydo yds ydy ynd ynn yns yny yob yod yon yoo yos yoy ysb yso yss ysy yyb yys yyy