In the May 1994 Word Ways, Lee Sallows published a K-graph containing the number words ONE through NINE. He then set several challenges, one of which was to find the K-graph which had the most numbers total, regardless of consecutivity.
"Ascending Magnitudes For K-Graphs,"
Word Ways: Vol. 29
, Article 16.
Available at: http://digitalcommons.butler.edu/wordways/vol29/iss3/16