The predetermined fashion of {HEAD ~ operation} of the status indicator can be used to identify {TAIL ~ the problem} that was detected 
The predetermined fashion of { HEAD ~ operation } of the status indicator can be used to identify { TAIL ~ the problem } that was detected
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH