{HEAD ~ The upper casing member} is provided at {TAIL ~ a rear portion} of both sides thereof with holding members through which the casing is grasped 
is provided at
{ HEAD ~ The upper casing member } is provided at { TAIL ~ a rear portion } of both sides thereof with holding members through which the casing is grasped
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH