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strict digraph sbox0i {
x0 [shape=box, label="\N"];
x1 [shape=box, label="\N"];
x2 [shape=box, label="\N"];
x3 [shape=box, label="\N"];
t15 [label="\N\ny0\n1"];
t02 [label="\N\ny2\n2"];
t01 [label="\N\ny1\n3"];
t05 [label="\N\ny2\n4"];
t04 [label="\N\ny1\n5"];
t03 [label="\N\nx2\n6"];
t08 [label="\N\nx1\n7"];
t06 [label="\N\ny1\n8"];
t09 [label="\N\nx1\n9"];
y1 [label="\N\n10", shape=box];
t12 [label="\N\nx0\n11"];
t13 [label="\N\nx0\n12"];
t17 [label="\N\nx1\n13"];
y2 [label="\N\n14", shape=box];
t10 [label="\N\nx3\n15"];
t14 [label="\N\nx3\n16"];
y3 [label="\N\n17", shape=box];
t18 [label="\N\nx1\n18"];
y0 [label="\N\n19", shape=box];
x2 -> t01; x3 -> t01; // t01 = x2 ^ x3;
x0 -> t02; x1 -> t02; // t02 = x0 | x1;
x1 -> t03; x2 -> t03; // t03 = x1 | x2;
x2 -> t04; t01 -> t04; // t04 = x2 & t01;
t01 -> t05; t02 -> t05; // t05 = t02 ^ t01;
x0 -> t06; t04 -> t06; // t06 = x0 | t04;
t05 -> y2; // y2 = ~ t05;
x1 -> t08; x3 -> t08; // t08 = x1 ^ x3;
t03 -> t09; t08 -> t09; // t09 = t03 & t08;
x3 -> t10; y2 -> t10; // t10 = x3 | y2;
t06 -> y1; t09 -> y1; // y1 = t09 ^ t06;
x0 -> t12; t05 -> t12; // t12 = x0 | t05;
y1 -> t13; t12 -> t13; // t13 = y1 ^ t12;
t03 -> t14; t10 -> t14; // t14 = t03 ^ t10;
x0 -> t15; x2 -> t15; // t15 = x0 ^ x2;
t13 -> y3; t14 -> y3; // y3 = t14 ^ t13;
t05 -> t17; t13 -> t17; // t17 = t05 & t13;
t14 -> t18; t17 -> t18; // t18 = t14 | t17;
t15 -> y0; t18 -> y0; // y0 = t15 ^ t18;
}
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