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