These operations include identifying {TAIL ~ a source data structure} and a source attribute associated with the source data structure and identifying a destination data structure and a destination attribute associated with {HEAD ~ the destination data structure} 
These operations include identifying { TAIL ~ a source data structure } and a source attribute associated with the source data structure and identifying a destination data structure and a destination attribute associated with { HEAD ~ the destination data structure }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD