In {TAIL ~ this way}, {HEAD ~ the bellows} covers the upper portion of the canvas belt on the upper side 
In { TAIL ~ this way } , { HEAD ~ the bellows } covers the upper portion of the canvas belt on the upper side
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH