x = 0;
y = -2;
----------
x = 0;
y = -1;
----------
x = 0;
y = 1;
----------
x = 0;
y = 2;
----------
x = 0;
y = 3;
----------
x = 1;
y = -2;
----------
x = 1;
y = -1;
----------
x = 1;
y = 0;
----------
x = 1;
y = 1;
----------
x = 1;
y = 2;
----------
x = 1;
y = 3;
----------
x = 2;
y = -2;
----------
x = 2;
y = 0;
----------
x = 2;
y = 1;
----------
x = 2;
y = 2;
----------
x = 2;
y = 3;
----------
x = 3;
y = -2;
----------
x = 3;
y = -1;
----------
x = 3;
y = 0;
----------
x = 3;
y = 1;
----------
x = 3;
y = 2;
----------
x = 3;
y = 3;
----------
==========