{HEAD ~ The variation} of {TAIL ~ such intensity} could be defined as a function of the navigation data and the data representative of one or more waypoints 
of
{ HEAD ~ The variation } of { TAIL ~ such intensity } could be defined as a function of the navigation data and the data representative of one or more waypoints
HEAD HEAD HEAD HEAD HEAD HEAD REL 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