Note that it is possible to freely combine the constitution of embodiment 5 with the constitution of {HEAD ~ any} of {TAIL ~ embodiments} 1 to 4 
Note that it is possible to freely combine the constitution of embodiment 5 with the constitution of { HEAD ~ any } of { TAIL ~ embodiments } 1 to 4
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH