{TAIL ~ The respective outputs} of {HEAD ~ the filters} are coupled through a multiplexer to a squarer 
{ TAIL ~ The respective outputs } of { HEAD ~ the filters } are coupled through a multiplexer to a squarer
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH