{HEAD ~ A voltage stimulus} applied to {TAIL ~ the drain} forces current to flow through the channel coupling the drain to the source 
applied to
{ HEAD ~ A voltage stimulus } applied to { TAIL ~ the drain } forces current to flow through the channel coupling the drain to the source
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH