for$b(-25..25){for$a(-50..29){$x=$a/21;$y=$b/15;print$b?chr:chr^chr
ord(substr'<6C}'.1x29 .'[FDEq2?@E96Cqa6C=q924',$a)-49;$_=30;($y,$x)
=(2*$x*$y+$b/15,$x*$x-$y*$y+$a/21)while$x*$x+$y*$y<9&$_++<95}$_=10}