In such instances, the new relationships are defined for affected components and {HEAD ~ subcomponents} and new rules are dynamically added to {TAIL ~ the existing rule schema} 
In such instances , the new relationships are defined for affected components and { HEAD ~ subcomponents } and new rules are dynamically added to { TAIL ~ the existing rule schema }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL