-ey bbb bbe bbi bbn bbs bby be- beb bee bei ben bes bey bi- bib bie bii bin bis biy bnb bne bni bnn bns bsb bse bsi bsn bss bsy by- bye byi byn bys ebb ebe ebi ebn ebs eby eeb eee een ees eey eib eie eii ein eis en- enb ene eni enn ens eny es- esb ese esi esn ess esy eye eyn eys ibb ibe ibi ibn ibs iby ie- iee iei ien ies iey iib iie iii iin iis in- inb ine ini inn ins iny is- isb ise isi isn iss isy iye iys iyy n-i nbb nbe nbi nbn nbs ne- neb nee nei nen nes ney nib nie nii nin nis nnb nne nni nnn nns nsb nse nsi nsn nss nsy nye nyn nys nyy sbb sbe sbi sbn sbs sby se- seb see sei sen ses sey sib sie sii sin sis snb sne sni snn sns sny ss- ssb sse ssi ssn sss sy- syb sye syi syn sys ybe ybi ybs yby yeb yee yei yen yes yey yie yii yin yis yne ynn yns yny ysb yse ysi yss ysy yyb yye yys yyy