Replace the first paragraph of the rule “The Building” with:-

The Building consists of an ordered collection of Levels arranged vertically, each of which contains a left-to-right ordered collection of exactly three Blocks (defaulting to three Empty Blocks).
The Building also has a Building Number, which defaults to 0, and a Building Stability, which is an integer that defaults to 1,000.

Replace the bullet point that begins “Choose a non-Empty Block” with:-

* If the topmost Level of the Building contains no Empty Blocks, add a new Level to the top of the Building.
* Choose a non-Empty Block that is not in one of the three topmost Levels of the Building, and swap that Block with an Empty Block on the topmost Level.

Replace “Building Contents to WWWWWWWWWWWWWWWWWW” with:-

the Building to be six Levels, each of which contains three Wooden Blocks

Set the Building to have a number of default Levels equal to the number of items that were in the Building Contents immediately prior to this proposal’s enactment, divided by three (and rounded up). Then, for each Block in that Building (working from left-to-right within each Level, and from the bottom Level to the top), replace it with the corresponding item in that was in the Building Contents immediately prior to this proposal’s enactment (working from start to end).