Su Hui, a Chinese poet, wrote a poem called the "Suanji Tu," which takes the form of a twenty-nine by twenty-nine character grid. The poem can be read diagonally, vertically, horizontally, backwards, or forwards allowing for 2,848 different readings!
Su Hui invented the genre of the palindrome poem, and her Suanji Tu is the most complex example written to date.
Unfortunately, all of Su Hui's literary work has mysteriously disappeared, and all that remains are replications of her unusual creations.
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