an interesting challenge.

[Jeremy C. Reed]

On Tue, 4 Apr 2006, Josh Zeidner wrote:

> josh at zeidner:/usr/share/dict$ perl -n -e 'if ( $_ =~ /\A[bdfeca]+\Z/ ) 
> {  print "$_" }' < american-english

Be sure to be at least four characters.

> > using bdfeca:
> > construct word strings in a list using only these letters in any
> > combination 4 characters or longer. use of the number 1 as a space filler
> > is permitted.

I am not sure what the "space filler" means. I guess it means putting 
multiple words together.

> > example:
> > dead1beef

Without using any "space filler" ...

$ cat /usr/share/dict/* | egrep -a '^[bdfeca]{4,}$' | sort -u | wc -l
      56

 Jeremy C. Reed

echo ':6DB6=88>?;@69876tA=AC8BB5tA6487><' | tr '4-F' 'wu rofIn.lkigemca'