{TAIL ~ The set} includes {HEAD ~ an elongated flexible separation chamber} which is formed with at least one interface region thereon 
{ TAIL ~ The set } includes { HEAD ~ an elongated flexible separation chamber } which is formed with at least one interface region thereon
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH