{HEAD ~ A coolant sprayer} may be included to provide {TAIL ~ flow} of a coolant onto the coring bit to cool the coring bit during operation 
included to provide
{ HEAD ~ A coolant sprayer } may be included to provide { TAIL ~ flow } of a coolant onto the coring bit to cool the coring bit during operation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH