Hereby is formed a circular opening 26 in {TAIL ~ the wall} 25 through which {HEAD ~ the shaft} 16 extends up to the plane rear wall 27 
through extends
Hereby is formed a circular opening 26 in { TAIL ~ the wall } 25 through which { HEAD ~ the shaft } 16 extends up to the plane rear wall 27
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH REL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH