{HEAD ~ The adder} 230 adds {TAIL ~ the input} from each of the above described multipliers 226, 227, 228 and 229 and the reference voltage 231 so as to output the results a the addition 
adds
{ HEAD ~ The adder } 230 adds { TAIL ~ the input } from each of the above described multipliers 226 , 227 , 228 and 229 and the reference voltage 231 so as to output the results a the addition
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH