f = @(a,b)a-flip(a)<[b,b]
f([1 1; 0 1], [1; 1])
f([0 0; 1 1], [1; 3])
f([1 1; 0 0], [3; 1])
f([0 0; 2 1], [2; 3])
f([0 0; 1 1], [2; 2])
f([1 1; 0 0], [2; 2])
f([0 1; 1 0], [2; 2])
f([1 0; 0 1], [2; 2])
f([2 0; 0 2], [2; 2])
f([1 0; 0 1], [1; 3])
f([0 2; 0 0], [2; 3])
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