 Numbers in (red) are total possible solutions for this shape.Notes:The 1x3x3 is of course very easy. However this shape can be used in many of the other shapes. The 1x3x4 also is an example of a shape that is used in many other shapes. This is shown with another simple shape (the 1x3x7) using both the 1x3x3 and the 1x3x4.
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