Rather than being a form that verse is actually written in,
the Bob and Wheel often is found at the end of some other verse form as a tail.
The bob is anywhere from one accented syllable to a couple of feet long. It may be an enjambment from the last line of the verse it is appended to, or it
may enjamb down into the wheel.
The wheel consists of four lines that are three verse feet long.
The rhyme scheme for the Bob and Wheel is "a baba."
The Bob and Wheel might appear indented from the rest of the verse that precedes it. In some cases, although not usually, the Bob and Wheel may be burden,
in other words, repeated like a chorus.