Tetractys, a poetic form consisting of at least 5 lines of 1, 2, 3, 4, 10 syllables (total of 20). Tetractys can be written with more than one verse, but must follow suit with an inverted syllable count. Tetractys can also be reversed and written 10, 4, 3, 2, 1. Double Tetractys maybe written as: 1, 2, 3, 4, 10, 10, 4, 3, 2, 1, and a Triple Tetractys as: 1, 2, 3, 4, 10, 10, 4, 3, 2, 1, 1, 2, 3, 4, and 10.