{HEAD ~ The intermediate layer} should have a flexural modulus of {TAIL ~ 50,000 psi} or greater 
{ HEAD ~ The intermediate layer } should have a flexural modulus of { TAIL ~ 50,000 psi } or greater
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH