-ey bbb bbe bbn bbo bbs bbt bby be- beb bee ben beo bes bet bey bnb bne bnn bno bns bnt bob boe bon boo bos bot boy bsb bse bsn bso bss bst bsy btb bte btn bto bts btt bty by- bye byn byo bys byt ebb ebe ebn ebo ebs ebt eby eeb eee een eeo ees eet eey en- enb ene enn eno ens ent eny eo- eob eoe eon eoo eos eot es- esb ese esn eso ess est esy etb ete etn eto ets ett ety eye eyn eyo eys eyt nbb nbe nbn nbo nbs nbt ne- neb nee nen neo nes net ney nnb nne nnn nno nns nnt no- nob noe non noo nos not noy nsb nse nsn nso nss nst nsy ntb nte ntn nto nts ntt nye nyn nyo nys nyt nyy ob- obb obe obn obo obs obt oby oeb oee oen oeo oes oet oey on- onb one onn ono ons ont ony oo- oob oon ooo oos oot os- osb ose osn oso oss ost ot- otb ote otn oto ots ott oye oyo oys sbb sbe sbn sbo sbs sbt sby se- seb see sen seo ses set sey snb sne snn sno sns snt sny sob soe son soo sos sot soy ss- ssb sse ssn sso sss sst stb ste stn sto sts stt sty sy- syb sye syn sys syt tbb tbe tbn tbo tbs tbt te- teb tee ten teo tes tet tey tnb tne tnn tno tns tnt to- tob toe ton too tos tot toy tsb tse tsn tso tss tst tsy ttb tte ttn tto tts ttt tty tye tyn tyo tys tyt ybe ybs yby yeb yee yen yeo yes yet yey yne ynn yns yny yob yoe yon yoo yos yot yoy ysb yse yso yss yst ysy yte ytn yto yts ytt yyb yye yys yyt yyy