... c : 00 01 11 100 1 00 1 00 1 1 1 anbnBn -1 Dn 11 11 −−−−+++=nnnnnnnnnnnnnBbaBbaBbaBbaD 1 ⊕⊕=nnnnBbaD00 01 11 100 1 10 000 1 1 1 anbnBn -1 BnnnnnnnnbaBbBaB ++=−− 11 )( 1 ... 01 11 100 1 00 1 00 1 1 1 anbnCn -1 Sn00 01 11 100 1 10 0 1 1 1 00anbnCn -1 Cn 11 11 −−−−+++=nnnnnnnnnnnnnCbaCbaCbaCbaS 1 ⊕⊕=nnnnCbaSnnnnnnnbaCbCaC ++=−− 11 )( 1 nnnnnnbaCbaC ... logic:Sn = f (an, bn, Cn -1 ) Cn = f (an, bn, Cn -1 )a b s c0 0 0 00 1 1 0 1 0 1 0 1 1 0 1 anbnCn -1 SnCn0 0 0 0 00 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0 0 1 1 00 1 1 0 1 1...