The casing includes {HEAD ~ a casing body} having {TAIL ~ an upper casing member} and a lower casing member joined together 
having
The casing includes { HEAD ~ a casing body } having { TAIL ~ an upper casing member } and a lower casing member joined together
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH