In the first two parts of this article, I have presented perfect specimens of isograms, pair isograms, trio isograms, etc. It is now time to present various specimens which, although flawed in one way or another, are sufficiently meritorious to display to an eargerly-waiting world. These fall into two catagories: near-isograms that fail to qualify by virtue of a single extra letter, and pair isograms in which certain letter-pairs are repeated.
Borgmann, Dmitri A.
"Long Isograms (Part 3),"
Word Ways: Vol. 18
, Article 13.
Available at: http://digitalcommons.butler.edu/wordways/vol18/iss4/13