{HEAD ~ A slide valve} 3 including {TAIL ~ a groove} in said guide member for receiving an end of said support column 
including
{ HEAD ~ A slide valve } 3 including { TAIL ~ a groove } in said guide member for receiving an end of said support column
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH