{HEAD ~ a plurality} of fluid responsive cylinders each seated in a respective one of said wells and each of said cylinders including a cylinder arm directed outwardly from {TAIL ~ said respective well} 
{ HEAD ~ a plurality } of fluid responsive cylinders each seated in a respective one of said wells and each of said cylinders including a cylinder arm directed outwardly from { TAIL ~ said respective well }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL