{TAIL ~ The combustion gases} generated during the combustion are collected and purified in a separating member by {HEAD ~ separation} of solid material from the combustion gases 
{ TAIL ~ The combustion gases } generated during the combustion are collected and purified in a separating member by { HEAD ~ separation } of solid material from the combustion gases
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH