{TAIL ~ The replaceable sludge can} is disposed at an opening of {HEAD ~ the bottom} of the external container 
{ TAIL ~ The replaceable sludge can } is disposed at an opening of { HEAD ~ the bottom } of the external container
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH