[0,1,3,2,8,7,6,5,4,20,19,18,17,16,15,14,13,12,11,
10,9,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,
34,33,32,31,30,29,28,27,26,25,24,23,22,21,123,122,
121,120,119,118,117,116,115,114,113,112,111,110,
109,108,107,106,105,104,103,102,101,100,99,98,97,
96]
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