> I generated a list of possible roots using John Cowan's
> everyword.pl <
http://tinyurl.com/m7aba>, then ran this list
> through a self-written perl script to eliminate roots with
> unwanted phoneme co-occurrences. John's script has provision
> for excluding contiguous unwanted letter combinations like
> _yi, iy, wu, uw, kwy, gwy_ or two vowels after one another,
> and preventing certain clusters from (co)occurring, but I
> also wanted to exclude the same consonant, as well as two
> stops or fricatives at the same point of articulation or two
> nasals, from occurring twice in the same word, so I used
> regular expressions like /([$C]).*\1/ and /([pbf]).*([pbf])/
> to exclude unwanted roots. ........