[2,2,4,2,2,4,6,2,4,4,2,6,8,2,6,4,4,6,2,8,10,2,8,4,
6,6,4,8,2,10,12,2,10,4,8,6,6,8,4,10,2,12,14,2,12,
4,10,6,8,8,6,10,4,12,2,14,16,2,14,4,12,6,10,8,8,
10,6,12,4,14,2,16,18,2,16,4,14,6,12,8,10,10,8,12,
6,14,4,16,2,18,20,2,18,4,16,6,14,8,12,10,10,12,8,
14,6,16,4,18,2,20]
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