A French verse form. Its rhyme scheme is ABaAabAB and all lines are in iambic tetrameter; the first, fourth and seventh lines are identical, as are the second and final lines, thereby making the initial and final couplets identical as well.
The features of the Triolet are:
5 of the 8 lines are repeated or refrain lines.
First line repeats at the 4th and 7th lines.
Second line repeats at the 8th line.
Rhyme scheme (where an upper-case letter indicates the appearance of an identical line, while a lower-case letter indicates a rhyme with each line designated by the same lower-case or upper-case letter)