[1,2,3,4,5,6,7,8,9,19,11,12,13,14,15,16,17,18,19, 29,21,22,23,24,25,26,27,28,29,39,31,32,33,34,35, 36,37,38,39,49,41,42,43,44,45,46,47,48,49,59,51, 52,53,54,55,56,57,58,59,69,61,62,63,64,65,66,67]