The pattern in the grid shows the six timetable pattern. The number order of the pattern is 6, 3 9. This is because: 6 x 1 = 6, 6 x 2 = 12, but 1 + 2 = 3, 6 x 3 = 9, 6 x 4 = 24, but 2 + 4 = 6 and etc.
If a shape doesn't connect back to the start, it is not a pattern.
Patterns are a good way of remembering the timetables.
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