[4,3,6,9,8,11,1,2,12,15,16,13,18,7,5,21,30,23,22, 17,19,25,10,27,34,29,32,31,20,24,36,37,42,39,46, 47,33,26,35,41,44,43,28,53,48,51,50,49,62,55,56, 61,66,38,14,59,52,45,68,63,40,67,64,57,72,71,70, 73,74,77,80,79]