a-a a-t aaa aad aaf aas aat aay ad- ada add adf ads adt ady af- afa afd aff afs aft afy as- asa asd asf ass ast asy at- ata atd atf ats att ay- aya ayd ayf ays ayt daa dad daf das dat day dda ddd ddf dds ddt ddy dfa dfd dff dfs dft dsa dsd dsf dss dst dsy dta dtd dtf dts dtt dty dy- dya dyd dys dyy faa fad faf fas fat fay fda fdd fdf fds fdt ffa ffd fff ffs fft ffy fsa fsd fsf fss fst fta ftd ftf fts ftt fty fy- fya saa sad saf sas sat say sda sdd sdf sds sdt sdy sfa sfd sff sfs sft ss- ssa ssd ssf sss sst sta std stf sts stt sty sy- sya syd sys syt taa tad taf tas tat tay tda tdd tdf tds tdt tdy tfa tfd tff tfs tft tsa tsd tsf tss tst tsy tta ttd ttf tts ttt tty tya tyd tyf tys tyt yaa yad yaf yas yat yay yda yds ydt ydy yfa yfd yff yfs yft ysa yss yst ysy yta ytd ytf yts ytt yyf yys yyt yyy