{TAIL ~ The belt portion} 10 is provided with a series of {HEAD ~ cogs} 12 on the rear side along the longitudinal direction 
{ TAIL ~ The belt portion } 10 is provided with a series of { HEAD ~ cogs } 12 on the rear side along the longitudinal direction
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH