The letters of certain words can be made into one of a series of geometrical forms when arranged, row by row, in the order in which they occur in the word. These forms sometimes exhibit edge words which read upwards, downwards, or both. In Edge Words (WW98274), I searched for right hand and left hand edge words which read downwards.
"Upwards Edge Words,"
Word Ways: Vol. 39
, Article 11.
Available at: http://digitalcommons.butler.edu/wordways/vol39/iss4/11