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I have a tattoo of a mesostic from John Cage's Sixty Two Mesostics Re: Merce Cunningham on the small of my back.
Anne de Montaut was an acrostic, a mesostic, a St. Andrew's Cross, a lozenge, -- everything, in short, but a sonnet.
It preserves the acrostic and mesostic, though not the telestic, form of the original: