{TAIL ~ Removal methods} include heating and rectification, absorption using a water absorbent, or a combination of {HEAD ~ these methods} 
{ TAIL ~ Removal methods } include heating and rectification , absorption using a water absorbent , or a combination of { HEAD ~ these methods }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD