3 \item Five elements $1 \le i \le 5$ taking their value $X_i$ in $\{0,1\}$
4 \item Configuration: a binary number in 0,1,\ldots,31
9 f_1(X_1,X_2,X_3,X_4,X_5) & = & X_1 \overline{X_2} + \overline{X_1} X_2 \\
10 f_2(X_1,X_2,X_3,X_4,X_5) & = & \overline{X_1 + X_2} \\
11 f_3(X_1,X_2,X_3,X_4,X_5) & = & X_3 \overline{X_1} \\
12 f_4(X_1,X_2,X_3,X_4,X_5) & = & X_5 \\
13 f_5(X_1,X_2,X_3,X_4,X_5) & = & \overline{X_3} + X_4