{TAIL ~ The method} depends on {HEAD ~ the type} of shell and on how the shape memory material is utilized 
{ TAIL ~ The method } depends on { HEAD ~ the type } of shell and on how the shape memory material is utilized
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH