Number_of_tiles
4
Size_of_each_of_these_tiles:
2 2 2 2
Tile-ids_--_Adjacent_tiles_in_correct_order:
0 1 3 
1 2 0 
2 3 1 
3 0 2 
Tile-id_--_image_tile-id_and_edge_no_of_image_of_edge-0:
0 2 0
1 3 0
2 0 0
3 1 0