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