{HEAD ~ The liquid} 22 is {TAIL ~ a colored vegetable dye solution}, such as red or blue, so as to be immediately recognizable on the cotton wadding 16 when the membrane 28 is broken 
is
{ HEAD ~ The liquid } 22 is { TAIL ~ a colored vegetable dye solution } , such as red or blue , so as to be immediately recognizable on the cotton wadding 16 when the membrane 28 is broken
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH