Oops - very true... hmm, I guess I should loop through the goodwords keys and test each one against the chunk... although, given, in this example, very few of the goodwords are multi-word, it might be quicker to treat those as the exceptions and check for them seperately.

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2
-$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20
[download]