The invention also comprises a method of block molding and a mold assembly which may be used to make {HEAD ~ a block} which may be stackable to form {TAIL ~ structures} of varying setback 
stackable to form
The invention also comprises a method of block molding and a mold assembly which may be used to make { HEAD ~ a block } which may be stackable to form { TAIL ~ structures } of varying setback
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH