The relationship between {HEAD ~ the shape factor} in the first growth layer and the central position shift between {TAIL ~ the first and the second growth layers} 
The relationship between { HEAD ~ the shape factor } in the first growth layer and the central position shift between { TAIL ~ the first and the second growth layers }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL