Around {HEAD ~ the notch} 43 is a plurality of {TAIL ~ pivotally disposed main ribs} 45 for supporting the cover 41 
Around { HEAD ~ the notch } 43 is a plurality of { TAIL ~ pivotally disposed main ribs } 45 for supporting the cover 41
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH