{HEAD ~ The respective outputs} from the high group divider and the low group divider are supplied to a high group sine wave signal generator and {TAIL ~ a low group sine wave signal generator} 
are supplied to
{ HEAD ~ The respective outputs } from the high group divider and the low group divider are supplied to a high group sine wave signal generator and { TAIL ~ a low group sine wave signal generator }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL