A child or infant can sit on the seat portion while {HEAD ~ his or her feet} and legs will be supported by {TAIL ~ the leg portion} 
supported by
A child or infant can sit on the seat portion while { HEAD ~ his or her feet } and legs will be supported by { TAIL ~ the leg portion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL