When the lid is in the second position it covers {TAIL ~ only a portion} of {HEAD ~ the top opening} of the container 
When the lid is in the second position it covers { TAIL ~ only a portion } of { HEAD ~ the top opening } of the container
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH