{HEAD ~ The open end bladder} provided in accordance with the present invention has an annular form and {TAIL ~ a pair} of openings extending through the bladder in the axial direction thereof 
has
{ HEAD ~ The open end bladder } provided in accordance with the present invention has an annular form and { TAIL ~ a pair } of openings extending through the bladder in the axial direction thereof
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH