{HEAD ~ The tines} of the rake extend upwards into {TAIL ~ the openings} of the screen 
extend upwards into
{ HEAD ~ The tines } of the rake extend upwards into { TAIL ~ the openings } of the screen
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH