Leg members 474 and 476 form {HEAD ~ substantially parallel planes} on {TAIL ~ either end} of hook anchor 464 
Leg members 474 and 476 form { HEAD ~ substantially parallel planes } on { TAIL ~ either end } of hook anchor 464
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH