-ey bbb bbd bbe bbn bbo bbs bbt bby bdb bdd bde bdo bds bdt bdy be- beb bed bee ben beo bes bet bey bnb bnd bne bnn bno bns bnt bob bod boe bon boo bos bot boy bsb bsd bse bsn bso bss bst bsy btb btd bte btn bto bts btt bty by- byd bye byn byo bys byt dbb dbd dbe dbn dbo dbs dbt dby ddb ddd dde ddn ddo dds ddt ddy de- deb ded dee den deo des det dey dnb dnd dne dnn dno dns dnt dny dob dod doe don doo dos dot doy dsb dsd dse dsn dso dss dst dsy dtb dtd dte dtn dto dts dtt dty dy- dyb dyd dye dyn dyo dys dyy ebb ebd ebe ebn ebo ebs ebt eby ed- edb edd ede edn edo eds edt edy eeb eed eee een eeo ees eet eey en- enb end ene enn eno ens ent eny eo- eob eod eoe eon eoo eos eot es- esb esd ese esn eso ess est esy etb etd ete etn eto ets ett ety eyd eye eyn eyo eys eyt nbb nbd nbe nbn nbo nbs nbt ndb ndd nde ndn ndo nds ndt ndy ne- neb ned nee nen neo nes net ney nnb nne nnn nno nns nnt no- nob nod noe non noo nos not noy nsb nsd nse nsn nso nss nst nsy ntb ntd nte ntn nto nts ntt nyd nye nyn nyo nys nyt nyy ob- obb obd obe obn obo obs obt oby odb odd ode odn odo ods odt oeb oed oee oen oeo oes oet oey on- onb ond one onn ono ons ont ony oo- oob ood oon ooo oos oot os- osb osd ose osn oso oss ost ot- otb otd ote otn oto ots ott oyd oye oyo oys sbb sbd sbe sbn sbo sbs sbt sby sdb sdd sde sdn sdo sds sdt sdy se- seb sed see sen seo ses set sey snb snd sne snn sno sns snt sny sob sod soe son soo sos sot soy ss- ssb ssd sse ssn sso sss sst stb std ste stn sto sts stt sty sy- syb syd sye syn sys syt tbb tbd tbe tbn tbo tbs tbt tdb tdd tde tdn tdo tds tdt tdy te- teb ted tee ten teo tes tet tey tnb tnd tne tnn tno tns tnt to- tob tod toe ton too tos tot toy tsb tsd tse tsn tso tss tst tsy ttb ttd tte ttn tto tts ttt tty tyd tye tyn tyo tys tyt ybe ybs yby yde ydn ydo yds ydt ydy yeb yed yee yen yeo yes yet yey ynd yne ynn yns yny yob yod yoe yon yoo yos yot yoy ysb yse yso yss yst ysy ytd yte ytn yto yts ytt yyb yye yys yyt yyy