const int expected1[9]={0, 6, 12, 18, 24, 30, 36, 42, 48};
const int expected2[48]={0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 3, 11, 12, 4, 13, 14, 15, 16, 17, 10, 18, 19, 13, 1, 20, 21, 22, 23, 24, 7, 25, 26, 27, 28, 22, 12, 29, 23, 30, 31, 32, 17, 33, 28, 34, 35, 30};
const int expected3[37]={0, 1, 3, 4, 6, 8, 9, 10, 12, 13, 14, 16, 17, 19, 21, 22, 23, 24, 26, 27, 28, 29, 30, 32, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, 48};
const int expected1[9]={0, 6, 12, 18, 24, 30, 36, 42, 48};
const int expected2[48]={0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 3, 11, 12, 4, 13, 14, 15, 16, 17, 10, 18, 19, 13, 1, 20, 21, 22, 23, 24, 7, 25, 26, 27, 28, 22, 12, 29, 23, 30, 31, 32, 17, 33, 28, 34, 35, 30};
const int expected3[37]={0, 1, 3, 4, 6, 8, 9, 10, 12, 13, 14, 16, 17, 19, 21, 22, 23, 24, 26, 27, 28, 29, 30, 32, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, 48};