x1 = 0;
x2 = 0;
----------
x1 = 0;
x2 = 1;
----------
x1 = 1;
x2 = 1;
----------
x1 = 0;
x2 = 2;
----------
x1 = 1;
x2 = 2;
----------
x1 = 2;
x2 = 2;
----------
x1 = 0;
x2 = 3;
----------
x1 = 1;
x2 = 3;
----------
x1 = 2;
x2 = 3;
----------
x1 = 3;
x2 = 3;
----------
x1 = 0;
x2 = 4;
----------
x1 = 1;
x2 = 4;
----------
x1 = 2;
x2 = 4;
----------
x1 = 3;
x2 = 4;
----------
x1 = 4;
x2 = 4;
----------
x1 = 0;
x2 = 5;
----------
x1 = 1;
x2 = 5;
----------
x1 = 2;
x2 = 5;
----------
x1 = 3;
x2 = 5;
----------
x1 = 4;
x2 = 5;
----------
x1 = 5;
x2 = 5;
----------
x1 = 0;
x2 = 6;
----------
x1 = 1;
x2 = 6;
----------
x1 = 2;
x2 = 6;
----------
x1 = 3;
x2 = 6;
----------
x1 = 4;
x2 = 6;
----------
x1 = 5;
x2 = 6;
----------
x1 = 6;
x2 = 6;
----------
x1 = 0;
x2 = 7;
----------
x1 = 1;
x2 = 7;
----------
x1 = 2;
x2 = 7;
----------
x1 = 3;
x2 = 7;
----------
x1 = 4;
x2 = 7;
----------
x1 = 5;
x2 = 7;
----------
x1 = 6;
x2 = 7;
----------
x1 = 7;
x2 = 7;
----------
x1 = 0;
x2 = 8;
----------
x1 = 1;
x2 = 8;
----------
x1 = 2;
x2 = 8;
----------
x1 = 3;
x2 = 8;
----------
x1 = 4;
x2 = 8;
----------
x1 = 5;
x2 = 8;
----------
x1 = 6;
x2 = 8;
----------
x1 = 7;
x2 = 8;
----------
x1 = 8;
x2 = 8;
----------
x1 = 0;
x2 = 9;
----------
x1 = 1;
x2 = 9;
----------
x1 = 2;
x2 = 9;
----------
x1 = 3;
x2 = 9;
----------
x1 = 4;
x2 = 9;
----------
x1 = 5;
x2 = 9;
----------
x1 = 6;
x2 = 9;
----------
x1 = 7;
x2 = 9;
----------
x1 = 8;
x2 = 9;
----------
x1 = 9;
x2 = 9;
----------
x1 = 0;
x2 = 10;
----------
x1 = 1;
x2 = 10;
----------
x1 = 2;
x2 = 10;
----------
x1 = 3;
x2 = 10;
----------
x1 = 4;
x2 = 10;
----------
x1 = 5;
x2 = 10;
----------
x1 = 6;
x2 = 10;
----------
x1 = 7;
x2 = 10;
----------
x1 = 8;
x2 = 10;
----------
x1 = 9;
x2 = 10;
----------
x1 = 10;
x2 = 10;
----------
==========