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