Point 0: 12, 13
Point 13:  2,  3
Point 15: 22, 23
Point 19: 10, 11
Cell 0
  Field 0
20,21  22,23  24,25
10,11  12,13  14,15
 0, 1   2, 3   4, 5




Cell 1
  Field 0
24,25  26,27  28,29
14,15  16,17  18,19
 4, 5   6, 7   8, 9




Cell 2
  Field 0
40,41  42,43  44,45
30,31  32,33  34,35
20,21  22,23  24,25




Cell 3
  Field 0
44,45  46,47  48,49
34,35  36,37  38,39
24,25  26,27  28,29