{HEAD ~ The blade} 204 may have {TAIL ~ an exterior surface} 204B and a blade edge 204C 
have
{ HEAD ~ The blade } 204 may have { TAIL ~ an exterior surface } 204B and a blade edge 204C
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH