{HEAD ~ An insert} for a child or infant car seat has at least a back portion, a seat portion and {TAIL ~ a leg portion} 
has
{ HEAD ~ An insert } for a child or infant car seat has at least a back portion , a seat portion and { TAIL ~ a leg portion }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL