-ey bbb bbe bbn bbs bby be- beb bee ben bes bev bey bnb bne bnn bns bnv bsb bse bsn bss bsv bsy bvb bve bvn bvs bvv by- bye byn bys ebb ebe ebn ebs ebv eby eeb eee een ees eev eey en- enb ene enn ens env eny es- esb ese esn ess esv esy evb eve evn evs evv evy eye eyn eys nbb nbe nbn nbs nbv ne- neb nee nen nes nev ney nnb nne nnn nns nnv nsb nse nsn nss nsv nsy nvb nve nvn nvv nye nyn nys nyy sbb sbe sbn sbs sbv sby se- seb see sen ses sev sey snb sne snn sns snv sny ss- ssb sse ssn sss ssv svb sve svn svs svv svy sy- syb sye syn sys v-e vbs vbv veb vee ven ves vey vn- vns vnv vsb vse vsn vss vsv vvb vvs vvv vye vyn ybe ybs yby yeb yee yen yes yev yey yne ynn yns yny ysb yse yss ysy yve yvy yyb yye yys yyy