R3+S4 S1+S2 C3 C4 C1+R4 R2+S3 R1 C2 out in 10R80 0 1 10 9 8 7 G1 G2 G3 G4 6 5 4 3 2 1 R A B Francois Roulet01.03.2015 A+B E D+F C+F C+D