[2,4,5,6,7,8,8,9,9,10,10,11,11,11,12,12,12,13,13,
13,13,14,14,14,14,14,15,15,15,15,15,16,16,16,16,
16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,
18,18,19,19,19,19,19,19,19,19,19,19,20,20,20,20,
20,20,20,20,20,20,20,20,21,21,21,21,21,21,21,21,
21,21,21,21,21,22,22,22,22,22,22,22,22,22,22,22,
22]
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