How much wood would a wood chop chop if a wood chop could chop wood?

The original tongue-twister is of unknown origin. In it,

"How much wood would a woodchuck chuck if a woodchuck could chuck wood?

is paired with

"A woodchuck would chuck all the wood he could if a woodchuck could chuck wood."

or

"As much wood as a woodchuck would, if a woodchuck could chuck wood."