‪start with the word‬
‪        ‘doubt’‬
‪and once it is out ‬
‪      rub it out‬
‪ and replace with ‬
‪   another word‬
‪    and another ‬
‪  which you may‬
‪     or may not ‬
‪        rub out‬
‪until your eraser ‬
‪      runs out‬
‪     and there is ‬
‪      no doubt‬
‪         left‬
‪     to rub out‬