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