[2,1,4,3,6,8,5,10,7,12,14,9,16,18,11,20,13,22,24, 15,26,17,28,30,19,32,34,21,36,23,38,40,25,42,44, 27,46,29,48,50,31,52,33,54,56,35,58,60,37,62,39, 64,66,41,68,43,70,72,45,74,76,47,78,49,80,82,51, 84,86,53,88,55]