Can not understand the code

[git-saner]

edge_labels.append([0, 1, 2] + [3, 4] * max_aux)
edge_labels.append([1, 0, 5] + [6, 7] * max_aux)
edge_labels.append([2, 5, 0] + [8, 9] * max_aux)
for idx in range(max_aux):
edge_labels.append([3, 6, 8] + [11, 12] * idx + [0, 10] + [11, 12] * (max_aux - idx - 1))
edge_labels.append([4, 7, 9] + [12, 13] * idx + [10, 0] + [12, 13] * (max_aux - idx - 1))

i can not understand the how to get the edge_labels，and what the edge_labels mean

[LHRLAB]

This is the edge-bias in constructing 14 types of relative positional relationships.

[git-saner]

This is the edge-bias in constructing 14 types of relative positional relationships.

OK,Thanks so much!