Cube string notation

[ofikodar]

Hello,

I am having difficulty understanding the notation used for the string input. From my interpretation of the documentation, the following code represents the mapping of colors to the faces of a cube:

color_side_mapping = { "red": "R", "white": "U", "orange": "L", "green": "F", "blue": "B", "yellow": "D" }

And this code represents the mapping of the faces to their respective indices in a string:

grid_size = 9
face_indices = dict()
face_indices['U'] = list(range(0, grid_size * 1))
face_indices['L'] = list(range(grid_size * 1 , grid_size * 2))
face_indices['F'] = list(range(grid_size * 2 , grid_size * 3))
face_indices['R'] = list(range(grid_size * 3 , grid_size * 4))
face_indices['B'] = list(range(grid_size * 4 , grid_size * 5))
face_indices['D'] = list(range(grid_size * 5 , grid_size * 6))

Example input: wwwwwwwwwooooooooogggggggggrrrrrrrrrbbbbbbbbbyyyyyyyyy

Any clarification would be greatly appreciated. Thank you.