The system also induces {HEAD ~ a shut} off in the first channel of said manifold for preventing {TAIL ~ a flow} of said first material in said first channel 
The system also induces { HEAD ~ a shut } off in the first channel of said manifold for preventing { TAIL ~ a flow } of said first material in said first channel
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH