When {HEAD ~ the terminal} transmits {TAIL ~ an attribute certificate issuance request message} in response to this message, the terminal transmits an attribute certificate issuance message to the terminal  
transmits
When { HEAD ~ the terminal } transmits { TAIL ~ an attribute certificate issuance request message } in response to this message , the terminal transmits an attribute certificate issuance message to the terminal
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH