The dissimilarity can include, but is not limited to, direction of {HEAD ~ rotation} and {TAIL ~ size} 
The dissimilarity can include , but is not limited to , direction of { HEAD ~ rotation } and { TAIL ~ size }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL