1 - 2 - 3 - 4 - 5 - 6 - 7Continuity is the term for groupings created by the flow of lines or by alignment. The individual circles are perceived as two lines not four intersecting lines. The curving lines are also seen as two lines of A-B and C-D rather than A-C and D-B.
We group together those elements requiring the fewest changes or interuptions.
