what does this mean?

i i
0 0
0 0
0 0
0 0

From the pattern you've provided, it appears to be a representation of a letter or symbol using a grid of 5 rows and 2 columns. Each cell in the grid is either filled with an "i" or a "0".

Based on this pattern, the letter or symbol being represented is likely the letter "I", with the body of the letter being formed by the "i"s and the empty spaces representing the middle and bottom parts of the "I".

To confirm this assumption, you could compare this pattern with other representations of the letter "I".