The hangers are separated by {HEAD ~ a fixed length} which is {TAIL ~ less than 11 inches} 
is
The hangers are separated by { HEAD ~ a fixed length } which is { TAIL ~ less than 11 inches }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL