a-a a-t aaa aad aas aat aay ad- ada add ads adt ady as- asa asd ass ast asy at- ata atd ats att ay- aya ayd ays ayt daa dad das dat day dda ddd dds ddt ddy dsa dsd dss dst dsy dta dtd dts dtt dty dy- dya dyd dys dyy saa sad sas sat say sda sdd sds sdt sdy ss- ssa ssd sss sst sta std sts stt sty sy- sya syd sys syt taa tad tas tat tay tda tdd tds tdt tdy tsa tsd tss tst tsy tta ttd tts ttt tty tya tyd tys tyt yaa yad yas yat yay yda yds ydt ydy ysa yss yst ysy yta ytd yts ytt yys yyt yyy