{HEAD ~ The bore} may include a first radial inner surface at the first lobe portion and {TAIL ~ a second radial inner surface} at the second lobe portion 
include
{ HEAD ~ The bore } may include a first radial inner surface at the first lobe portion and { TAIL ~ a second radial inner surface } at the second lobe portion
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH