-ey a-a a-b a-t a-z aaa aab aae aas aat aay aaz ab- aba abb abe abs abt aby abz aea aeb aee aes aet aey aez as- asa asb ase ass ast asy asz at- ata atb ate ats att atz ay- aya aye ays ayt ayz az- aza azb aze azs azt azy azz baa bab bae bas bat bay baz bba bbb bbe bbs bbt bby be- bea beb bee bes bet bey bez bsa bsb bse bss bst bsy bta btb bte bts btt bty btz by- bya bye bys byt byz bza bze bzs bzz eaa eab eae eas eat eaz eba ebb ebe ebs ebt eby eea eeb eee ees eet eey es- esa esb ese ess est esy eta etb ete ets ett ety etz eya eye eys eyt eze ezs ezz saa sab sae sas sat say saz sba sbb sbe sbs sbt sby se- sea seb see ses set sey sez ss- ssa ssb sse sss sst ssz sta stb ste sts stt sty stz sy- sya syb sye sys syt sza sze taa tab tae tas tat tay taz tba tbb tbe tbs tbt tbz te- tea teb tee tes tet tey tez tsa tsb tse tss tst tsy tta ttb tte tts ttt tty tya tye tys tyt tza tze tzs yaa yab yae yas yat yay yaz ybe ybs yby ybz yea yeb yee yes yet yey yez ysa ysb yse yss yst ysy ysz yta yte yts ytt yyb yye yys yyt yyy yyz yzb yzy zaa zab zas zat zay zaz zbb zbs zbt zby zea zeb zee zes zet zez zsa zse zst zsz zta zte zzs zzt zzy zzz