The first and second arms each have a lobe section between their distal and proximal ends, which are resiliently deformable to allow movement of the distal ends relative to {HEAD ~ the proximal ends} of {TAIL ~ the respective arms} 
The first and second arms each have a lobe section between their distal and proximal ends , which are resiliently deformable to allow movement of the distal ends relative to { HEAD ~ the proximal ends } of { TAIL ~ the respective arms }
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 OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL