The SPECULATION puzzle is an (11,3) word configuration using the eleven words OUI, PUN, UTE, COP, LOT, SIC, LIP, SAL, TAN, ACE, and SEN. The puzzle is to arrange the words on the eleven nodes of the graph so that every "line" of three (either on a straight line segment or on the eleven nodes of the graph) so that every "line" of three (either on a straight line segment or on an arc) contains three words with a single letter in common. See "Puzzles and Games on Word Configurations" in the November 2001 issue of Word Ways for details about this type of puzzle.
"The Speculation Puzzle,"
Word Ways: Vol. 36
, Article 20.
Available at: http://digitalcommons.butler.edu/wordways/vol36/iss3/20