At the same time, the child is not frustrated or confused by interacting with a toolbar featuring {TAIL ~ a number} of {HEAD ~ disabled controls} 
At the same time , the child is not frustrated or confused by interacting with a toolbar featuring { TAIL ~ a number } of { HEAD ~ disabled controls }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD