Word square place names). However, 11-squares are possible if words from a number of languages are allowed ("Word Ways", August 2004 and May 2005). It is possible to estimate the degree of difficulty of constructing word squares. 5-squares can be constructed with as little as a 250-word vocabulary. Roughly, for each step upwards, one needs four times the number of words. For a 9-square, one needs over 60,000 9-letter words, which is practically all of those in single very large dictionaries. For large squares, the vocabulary prevents selecting more "desirable" words (i.e. words that are unhyphenated, in common use, without contrived inflections,
Bixby letter imitate Lincoln's handwriting, calling it "halting and awkward and makes his forceful hand appear like a child's scrawl". Tobin's facsimile also errs when compared to the original text of the letter published in Boston newspapers; adding the salutation "To Mrs Bixby, Boston Mass", misspelling the word "assuage" as "assauge", omitting the word "to" after the word "tendering", changing the plural "words" into "word", not capitalizing the words "freedom" and "republic", missing the recipient "Mrs. Bixby" on the bottom left, and combining the original three paragraphs into one. Huber's Museum corrected the spelling of "assuage" in their version of the facsimile.