{HEAD ~ The controller} detects {TAIL ~ transitions} between inspiration and expiration via a flow signal to discriminate between the respiratory phases of the patient 
detects
{ HEAD ~ The controller } detects { TAIL ~ transitions } between inspiration and expiration via a flow signal to discriminate between the respiratory phases of the patient
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH