{HEAD ~ The pivoting ball support movement prevention means} can include {TAIL ~ a slot} in the top of the frame, through which the pivoting ball support top extension protrudes 
include
{ HEAD ~ The pivoting ball support movement prevention means } can include { TAIL ~ a slot } in the top of the frame , through which the pivoting ball support top extension protrudes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH