b-u bbb bbi bbn bbo bbs bbu bby bi- bib bii bin bio bis biu biy bnb bni bnn bno bns bnu bob boi bon boo bos bou boy bsb bsi bsn bso bss bsu bsy bub bui bun buo bus buu buy by- byi byn byo bys byu ibb ibi ibn ibo ibs ibu iby iib iii iin iio iis iiu in- inb ini inn ino ins inu iny io- iob ioi ion ioo ios iou is- isb isi isn iso iss isu isy iu- iub iui ius iyo iys iyy n-i nbb nbi nbn nbo nbs nbu nib nii nin nio nis niu nnb nni nnn nno nns nnu no- nob noi non noo nos nou noy nsb nsi nsn nso nss nsu nsy nub nui nun nuo nus nuu nuy nyn nyo nys nyu nyy o-i ob- obb obi obn obo obs obu oby oib oii oin oio ois oiu on- onb oni onn ono ons onu ony oo- oob ooi oon ooo oos os- osb osi osn oso oss osu ou- oui oun ouo ous oyi oyo oys sbb sbi sbn sbo sbs sbu sby sib sii sin sio sis siu snb sni snn sno sns snu sny sob soi son soo sos sou soy ss- ssb ssi ssn sso sss ssu sub sui sun suo sus suu suy sy- syb syi syn sys syu ubb ubi ubn ubo ubs ubu uby uib uii uin uio uis uiu un- unb uni unn uno uns unu uny uob uon uoo uos usb usi usn uso uss usu uun uus uuu uyi uyo uys uyu ybi ybs yby yii yin yio yis ynn yns ynu yny yob yoi yon yoo yos you yoy ysb ysi yso yss ysu ysy yui yun yuo yus yuu yuy yyb yys yyu yyy