01,02,04,05,06,07,10,13,17,18,22,24
27,30,32,33,34,36,40,41,42,45,48,49

02,04,06,08,11,12,13,14,15,17,23,24
25,27,28,30,32,33,34,37,42,45,47,48

03,06,08,09,13,14,15,16,18,19,20,22
23,24,26,27,29,30,31,38,41,45,46,48

01,02,03,05,08,10,14,21,23,27,29,31
32,33,34,35,38,39,40,43,44,45,47,49