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