The shortened precise expansion 18 will be embedded into the rakish sunken surface 28 that frames the finish of the contiguous block. Similarly, the cone expansion 54 on the last 50 will be embedded into the cone break 40 of a lower block while simultaneously the cone break 52 gets the cone augmentation 38 of a lower block. Likewise, a descending expansion 58 underneath the last 50 will find a way into the break 48 on lower blocks and the break 56 will get shoulders 56 of lower blocks.