correct = [['a','b','c','d'],
[2,3,1,3],
[3,1,2,3],
[4,4,4,4]]
print [list(i) for i in zip(*correct )]
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[['a', 2, 3, 4], ['b', 3, 1, 4], ['c', 1, 2, 4], ['d', 3, 3, 4]]