Structure is provided for merging the fixed sized bit field and {TAIL ~ the variable sized bit field} into {HEAD ~ a continuous bit field} 
Structure is provided for merging the fixed sized bit field and { TAIL ~ the variable sized bit field } into { HEAD ~ a continuous bit field }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD