{HEAD ~ The variation} in stiffness may provide {TAIL ~ stiffer projections} at the gap in the split ring, i.e. towards the ends of the strip of material that are curved towards each other to form the ring 
provide
{ HEAD ~ The variation } in stiffness may provide { TAIL ~ stiffer projections } at the gap in the split ring , i.e. towards the ends of the strip of material that are curved towards each other to form the ring
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH