said {HEAD ~ slot} having {TAIL ~ a cross section configuration} of a type to allow passage of said control line therethrough but preventing passage of said keeper element 
having
said { HEAD ~ slot } having { TAIL ~ a cross section configuration } of a type to allow passage of said control line therethrough but preventing passage of said keeper element
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH