b-u bbb bbd bbi bbn bbo bbs bbu bby bdb bdd bdi bdo bds bdu bdy bi- bib bid bii bin bio bis biu biy bnb bnd bni bnn bno bns bnu bob bod boi bon boo bos bou boy bsb bsd bsi bsn bso bss bsu bsy bub bud bui bun buo bus buu buy by- byd byi byn byo bys byu dbb dbd dbi dbn dbo dbs dbu dby ddb ddd ddi ddn ddo dds ddu ddy di- dib did dii din dio dis diu diy dnb dnd dni dnn dno dns dny dob dod doi don doo dos dou doy dsb dsd dsi dsn dso dss dsu dsy dub dud dui dun duo dus duy dy- dyb dyd dyn dyo dys dyu dyy i-d ibb ibd ibi ibn ibo ibs ibu iby idb idd idi idn ido ids idu idy iib iid iii iin iio iis iiu in- inb ind ini inn ino ins inu iny io- iob iod ioi ion ioo ios iou is- isb isd isi isn iso iss isu isy iu- iub iud iui ius iyo iys iyy n-i nbb nbd nbi nbn nbo nbs nbu ndb ndd ndi ndn ndo nds ndu ndy nib nid nii nin nio nis niu nnb nni nnn nno nns nnu no- nob nod noi non noo nos nou noy nsb nsd nsi nsn nso nss nsu nsy nub nud nui nun nuo nus nuu nuy nyd nyn nyo nys nyu nyy o-i ob- obb obd obi obn obo obs obu oby odb odd odi odn odo ods odu oib oid oii oin oio ois oiu on- onb ond oni onn ono ons onu ony oo- oob ood ooi oon ooo oos os- osb osd osi osn oso oss osu ou- oud oui oun ouo ous oyd oyi oyo oys sbb sbd sbi sbn sbo sbs sbu sby sdb sdd sdi sdn sdo sds sdu sdy sib sid sii sin sio sis siu snb snd sni snn sno sns snu sny sob sod soi son soo sos sou soy ss- ssb ssd ssi ssn sso sss ssu sub sud sui sun suo sus suu suy sy- syb syd syi syn sys syu ubb ubi ubn ubo ubs ubu uby udb udd udi udn udo uds udu uib uid uii uin uio uis uiu un- unb und uni unn uno uns unu uny uob uod uon uoo uos usb usd usi usn uso uss usu uun uus uuu uyi uyo uys uyu ybi ybs yby ydn ydo yds ydy yid yii yin yio yis ynd ynn yns ynu yny yob yod yoi yon yoo yos you yoy ysb ysi yso yss ysu ysy yud yui yun yuo yus yuu yuy yyb yys yyu yyy