-ey a-a a-b a-t aaa aab aae aao aas aat aay ab- aba abb abe abo abs abt aby aea aeb aee aeo aes aet aey aoa aob aoe aoo aos aot as- asa asb ase aso ass ast asy at- ata atb ate ato ats att ay- aya aye ayo ays ayt baa bab bae bao bas bat bay bba bbb bbe bbo bbs bbt bby be- bea beb bee beo bes bet bey boa bob boe boo bos bot boy bsa bsb bse bso bss bst bsy bta btb bte bto bts btt bty by- bya bye byo bys byt eaa eab eae eao eas eat eba ebb ebe ebo ebs ebt eby eea eeb eee eeo ees eet eey eo- eoa eob eoe eoo eos eot es- esa esb ese eso ess est esy eta etb ete eto ets ett ety eya eye eyo eys eyt oaa oab oae oao oas oat ob- oba obb obe obo obs obt oby oea oeb oee oeo oes oet oey oo- ooa oob ooo oos oot os- osa osb ose oso oss ost ot- ota otb ote oto ots ott oya oye oyo oys saa sab sae sao sas sat say sba sbb sbe sbo sbs sbt sby se- sea seb see seo ses set sey soa sob soe soo sos sot soy ss- ssa ssb sse sso sss sst sta stb ste sto sts stt sty sy- sya syb sye sys syt taa tab tae tao tas tat tay tba tbb tbe tbo tbs tbt te- tea teb tee teo tes tet tey to- toa tob toe too tos tot toy tsa tsb tse tso tss tst tsy tta ttb tte tto tts ttt tty tya tye tyo tys tyt yaa yab yae yao yas yat yay ybe ybs yby yea yeb yee yeo yes yet yey yob yoe yoo yos yot yoy ysa ysb yse yso yss yst ysy yta yte yto yts ytt yyb yye yys yyt yyy