{TAIL ~ Upper shell portion A} is threaded onto {HEAD ~ lower shell portion C} to form an airtight egg shaped container except for opening 3 
{ TAIL ~ Upper shell portion A } is threaded onto { HEAD ~ lower shell portion C } to form an airtight egg shaped container except for opening 3
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH