The asymmetrically offset profile has {TAIL ~ a plurality} of {HEAD ~ longitudinally spaced engagement thresholds} 
The asymmetrically offset profile has { TAIL ~ a plurality } of { HEAD ~ longitudinally spaced engagement thresholds }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD