-ey a-a a-c a-t aaa aac aae aas aat aay ac- aca acc ace acs act acy aea aec aee aes aet aey as- asa asc ase ass ast asy at- ata atc ate ats att ay- aya ayc aye ays ayt c-- caa cac cae cas cat cay cca ccc cce ccs cct ce- cea cec cee ces cet cey csa csc cse css cst csy cta ctc cte cts ctt cty cya cyc cye cys cyt eaa eac eae eas eat ec- eca ecc ece ecs ect eea eec eee ees eet eey es- esa esc ese ess est esy eta etc ete ets ett ety eya eyc eye eys eyt saa sac sae sas sat say sca scc sce scs sct se- sea sec see ses set sey ss- ssa ssc sse sss sst sta stc ste sts stt sty sy- sya syc sye sys syt taa tac tae tas tat tay tca tcc tce tcs tct te- tea tec tee tes tet tey tsa tsc tse tss tst tsy tta ttc tte tts ttt tty tya tyc tye tys tyt yaa yac yae yas yat yay yca ycc yce ycs ycy yea yec yee yes yet yey ysa ysc yse yss yst ysy yta ytc yte yts ytt yyc yye yys yyt yyy