x = array1d(1..4, [1, 2, 3, 4]);
----------
x = array1d(1..4, [1, 2, 4, 3]);
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x = array1d(1..4, [1, 3, 2, 4]);
----------
x = array1d(1..4, [1, 3, 4, 2]);
----------
x = array1d(1..4, [1, 4, 2, 3]);
----------
x = array1d(1..4, [1, 4, 3, 2]);
----------
x = array1d(1..4, [2, 1, 3, 4]);
----------
x = array1d(1..4, [2, 3, 1, 4]);
----------
x = array1d(1..4, [2, 3, 4, 1]);
----------
x = array1d(1..4, [2, 4, 1, 3]);
----------
x = array1d(1..4, [2, 4, 3, 1]);
----------
x = array1d(1..4, [3, 1, 2, 4]);
----------
x = array1d(1..4, [3, 1, 4, 2]);
----------
x = array1d(1..4, [3, 2, 1, 4]);
----------
x = array1d(1..4, [3, 2, 4, 1]);
----------
x = array1d(1..4, [3, 4, 2, 1]);
----------
x = array1d(1..4, [4, 1, 2, 3]);
----------
x = array1d(1..4, [4, 1, 3, 2]);
----------
x = array1d(1..4, [4, 2, 1, 3]);
----------
x = array1d(1..4, [4, 2, 3, 1]);
----------
x = array1d(1..4, [4, 3, 1, 2]);
----------
==========