What is a triolet?

According to poets.org

The triolet is a short poem of eight lines with only two rhymes used throughout. The requirements of this fixed form are straightforward: the first line is repeated in the fourth and seventh lines; the second line is repeated in the final line; and only the first two end-words are used to complete the tight rhyme scheme. Thus, the poet writes only five original lines, giving the triolet a deceptively simple appearance: ABaAabAB, where capital letters indicate repeated lines.

This will be my first try!