According to {TAIL ~ the present invention}, {HEAD ~ the sequential work operations} of each group are monitored for compliance with a sequential pattern for the group having the same working pattern for each working cycle 
According to { TAIL ~ the present invention } , { HEAD ~ the sequential work operations } of each group are monitored for compliance with a sequential pattern for the group having the same working pattern for each working cycle
REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH