Twas three witches, oh but Hallowe'en is past, Twas three leaves left on the tree, one was should, one was could and the other, would.
Should said he should fall, and could fall, first, if would and could got out of the way.
Could said he could fall first if should would shut up (so he could hear himself think) if would would move then he, could, fall to the ground and get out of the way.
Would said he would fall first as he was closest to the ground, but could, then should, be last as could was next, only if could would not land on would, which should leave the way clear for should.
As the leaves of this story would have it, could you believe it is true every word, why should I lie?
Ask should, could and would, they are among they other leaves on the ground, fallen ...