The body suit further has a cavity defined within {HEAD ~ the inner layer}, the cavity having {TAIL ~ an amount} of known initial volume 
The body suit further has a cavity defined within { HEAD ~ the inner layer } , the cavity having { TAIL ~ an amount } of known initial volume
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH