Thirteen-Box Tagmemic Theory as a Method for Displaying Semi-Independent Language Variables September 12, 2013 By Vern Poythress Vern S. Poythress, “Thirteen-Box Tagmemic Theory as a Method for Displaying Semi-Independent Language Variables” (PDF), Originally published in Studies in Language 2/1:71-85. Used with permission. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)MoreClick to share on Reddit (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)