My word-square computer program is a general-purpose one designed to search for words to create squares of order 4 to 14. The word typed in for the top row triggers the size to be processed; the program then fills in words for successive rows as far as possible. From thousands of such runs. I have noted that most full searches for ten-squares fail to progress further than the fifth row. Sometimes (see square on left) the leading five letters of the last five rows seems to offer possibilities of completion.
"A New Wordsworth Word Square,"
Word Ways: Vol. 31
, Article 12.
Available at: https://digitalcommons.butler.edu/wordways/vol31/iss1/12