Thus, the pipeline circuit 12A, the pipeline circuit 12B, and {TAIL ~ the pipeline circuit} 12C are redundant versions of {HEAD ~ the same pipeline circuit} 
Thus , the pipeline circuit 12A , the pipeline circuit 12B , and { TAIL ~ the pipeline circuit } 12C are redundant versions of { HEAD ~ the same pipeline circuit }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD