06:59:01
∅ → 0 - 0 (0 - 0)
07:00:21
0 - 0 (0 - 0) → 0 - 1 (0 - 1)
07:01:02
0 - 1 (0 - 1) → 1 - 1 (1 - 1)
07:01:22
1 - 1 (1 - 1) → 2 - 1 (2 - 1)
07:01:42
2 - 1 (2 - 1) → 3 - 1 (3 - 1)
07:02:02
3 - 1 (3 - 1) → 4 - 1 (4 - 1)
07:02:22
4 - 1 (4 - 1) → 5 - 1 (5 - 1)
07:08:25
5 - 1 (5 - 1) → 5 - 1