It should be noted that {TAIL ~ elements} having a corresponding function have been provided with the same reference signs in {HEAD ~ the different embodiments} 
It should be noted that { TAIL ~ elements } having a corresponding function have been provided with the same reference signs in { HEAD ~ the different embodiments }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD