In {TAIL ~ the case} of {HEAD ~ the embodiment} illustrated in FIG 3, the covers 30 are virtually planar 
In { TAIL ~ the case } of { HEAD ~ the embodiment } illustrated in FIG 3 , the covers 30 are virtually planar
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH