In the region of {HEAD ~ the diverter}, at least one of the cores has a lower height than the cores outside {TAIL ~ the region} of the diverter 
In the region of { HEAD ~ the diverter } , at least one of the cores has a lower height than the cores outside { TAIL ~ the region } of the diverter
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH