The crowns of the two upper pulleys are offset to the right and {HEAD ~ the crowns} of {TAIL ~ the two lower pulleys} are offset to the left 
of
The crowns of the two upper pulleys are offset to the right and { HEAD ~ the crowns } of { TAIL ~ the two lower pulleys } are offset to the left
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH