bbb bbd bbi bbn bbs bby bdb bdd bdi bds bdy bi- bib bid bii bin bis biy bnb bnd bni bnn bns bsb bsd bsi bsn bss bsy by- byd byi byn bys dbb dbd dbi dbn dbs dby ddb ddd ddi ddn dds ddy di- dib did dii din dis diy dnb dnd dni dnn dns dny dsb dsd dsi dsn dss dsy dy- dyb dyd dyn dys dyy i-d ibb ibd ibi ibn ibs iby idb idd idi idn ids idy iib iid iii iin iis in- inb ind ini inn ins iny is- isb isd isi isn iss isy iys iyy n-i nbb nbd nbi nbn nbs ndb ndd ndi ndn nds ndy nib nid nii nin nis nnb nni nnn nns nsb nsd nsi nsn nss nsy nyd nyn nys nyy sbb sbd sbi sbn sbs sby sdb sdd sdi sdn sds sdy sib sid sii sin sis snb snd sni snn sns sny ss- ssb ssd ssi ssn sss sy- syb syd syi syn sys ybi ybs yby ydn yds ydy yid yii yin yis ynd ynn yns yny ysb ysi yss ysy yyb yys yyy