{HEAD ~ The fluid}, in turn, may be conducted away from the window by {TAIL ~ a pump}, for example, and its flow may be regulated by a valve 
conducted away by
{ HEAD ~ The fluid } , in turn , may be conducted away from the window by { TAIL ~ a pump } , for example , and its flow may be regulated by a valve
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH