I first saw mention of Tanka in a Phyllys Wheatley poem from 1711. It was in a small chap-book she had sent to my great, great, great, great, great, Uncle Bobbledder Jamie Jo Desiree Utley III, it said, "Next time I see y'all make sure I says Tanka."
I just looked up Tanka in dictionary.com/ reference, and yes, a Japanese poem consisting of 31 syllables in five lines - I am blow away - fantastic - bravo!!!!!!!!!