It's true there are 4 cells x 6 dots = 24 dots. rests are just the carvings and design, same applies to the mid line to provide visually impaired user to sense

It's true there are 4 cells x 6 dots = 24 dots. rests are just the carvings and design, same applies to the mid line to provide visually impaired user to sense "left" and "right"