-ey bbb bbe bbf bbi bbo bbs bby be- beb bee bef bei beo bes bey bfb bfe bff bfi bfo bfs bfy bi- bib bie bif bii bio bis biy bob boe bof boi boo bos boy bsb bse bsf bsi bso bss bsy by- bye byf byi byo bys ebb ebe ebf ebi ebo ebs eby eeb eee eef eeo ees eey ef- efb efe eff efi efo efs eib eie eif eii eio eis eo- eob eoe eof eoi eoo eos es- esb ese esf esi eso ess esy eye eyo eys fbb fbe fbf fbi fbo fbs feb fee fef fei feo fes fey ffe fff ffi ffo ffs ffy fib fie fif fii fis fob foe fof foi foo fos foy fsb fse fsf fsi fso fss fy- fyb fye fyi fyo i-f ibb ibe ibf ibi ibo ibs iby ie- iee ief iei ies iey ifb ife iff ifi ifo ifs ify iib iie iif iii iio iis io- iob ioe iof ioi ioo ios is- isb ise isf isi iso iss isy iye iyo iys iyy o-i ob- obb obe obf obi obo obs oby oeb oee oef oei oeo oes oey of- ofb ofe off ofi ofo ofs oib oie oif oii oio ois oo- oob oof ooi ooo oos os- osb ose osf osi oso oss oye oyi oyo oys sbb sbe sbf sbi sbo sbs sby se- seb see sef sei seo ses sey sfb sfe sff sfi sfo sfs sib sie sif sii sio sis sob soe sof soi soo sos soy ss- ssb sse ssf ssi sso sss sy- syb sye syi sys ybe ybf ybi ybs yby yeb yee yef yei yeo yes yey yfe yff yfs yie yif yii yio yis yob yoe yof yoi yoo yos yoy ysb yse ysi yso yss ysy yyb yye yyf yys yyy