1-11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29
2-21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39
1-11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29
2-21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39