{HEAD ~ The ratchet housing} 92 extends inwardly from {TAIL ~ the inside surface} of the drill string 32 and washover pipe 40 
extends inwardly from
{ HEAD ~ The ratchet housing } 92 extends inwardly from { TAIL ~ the inside surface } of the drill string 32 and washover pipe 40
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH