2    | 3,4
14   | 16,19
13   | 15,17,18,23
29   | 33,35,36,37,38,39,40,42,43,53
20   | 21,30,41,44
26   | 27,50
31   | 34,45
47   | 48,59
49   | 52,54,55,57,58,61,62,63,64,65,67,69,75,76,78,79,80,84
81   | 82,94
71   | 70,72,73,74,83,86,90,91,92,93,95,96,99,100,101,102,103,104,105,107,108,109