{HEAD ~ A stabilizer} for properly orienting the coring unit with respect to {TAIL ~ a pipe} being cored may also be provided 
{ HEAD ~ A stabilizer } for properly orienting the coring unit with respect to { TAIL ~ a pipe } being cored may also be provided
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH