| CPC E04C 1/395 (2013.01) [A01G 9/28 (2018.02)] | 20 Claims | 

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               1. A block, comprising: 
            a first side having a first predetermined load-bearing area between a substantially flat front, a substantially flat rear, a textured, non-load-bearing left side and a textured, non-load-bearing right side, and a first non-load-bearing area on the first side between the front and the rear, the first predetermined load-bearing area having a first predetermined size and a first predetermined location; and 
                a second side having a second predetermined load-bearing area between the front and the rear and a second non-load-bearing area on the second side between the front and the rear, the second predetermined load-bearing area having a second predetermined size and a second predetermined location; and 
                wherein the first non-load-bearing area has a profile that is different from the second non-load-bearing area when viewed from the front or the rear. 
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