bbb bbi bbn bbo bbs bby bi- bib bii bin bio bis biv biy bnb bni bnn bno bns bnv bob boi bon boo bos bov boy bsb bsi bsn bso bss bsv bsy bvb bvi bvn bvo bvs bvv by- byi byn byo bys i-v ibb ibi ibn ibo ibs ibv iby iib iii iin iio iis in- inb ini inn ino ins inv iny io- iob ioi ion ioo ios iov is- isb isi isn iso iss isv isy ivb ivi ivo ivs ivv ivy iyo iys iyy n-i nbb nbi nbn nbo nbs nbv nib nii nin nio nis niv nnb nni nnn nno nns nnv no- nob noi non noo nos nov noy nsb nsi nsn nso nss nsv nsy nvb nvi nvn nvv nyn nyo nys nyy o-i ob- obb obi obn obo obs obv oby oib oii oin oio ois oiv on- onb oni onn ono ons ony oo- oob ooi oon ooo oos oov os- osb osi osn oso oss osv ov- ovb ovi ovo ovs ovv oyi oyo oys sbb sbi sbn sbo sbs sbv sby sib sii sin sio sis siv snb sni snn sno sns snv sny sob soi son soo sos sov soy ss- ssb ssi ssn sso sss ssv svb svi svn svo svs svv svy sy- syb syi syn sys vbi vbo vbs vbv vi- vib vii vin vio vis viv viy vn- vni vno vns vnv vob voi von voo vos vov voy vsb vsi vsn vso vss vsv vvb vvi vvo vvs vvv vyn ybi ybs yby yii yin yio yis ynn yns yny yob yoi yon yoo yos yoy ysb ysi yso yss ysy yvi yvo yvy yyb yys yyy