<｜begin▁of▁sentence｜>### Instruction:
As an archivist, you might come across a collection of historical documents that are categorized by a unique numerical system ranging from 0 to 9. For organizational purposes, imagine you've been tasked with reorganizing these documents into new groupings. Each group should contain numbers that are part of an equivalence set based on the condition that any two numbers within the same group have a difference that is a multiple of 3.

Can you consider how you might go about reclassifying these documents according to the outlined equivalence relation, to enhance the accessibility of the archive? This process doesn't involve the use of any GML files or external datasets, but rather a conceptual reordering based on the stated numeric relationship.
### Response:
import networkx as nx

# Function to check modulo 3 equivalence
def mod3(x, y):
    return (x - y) % 3 == 0

# Set of integers from 0 to 9
X = set(range(10))

# Finding equivalence classes for relation mod3
equiv_classes = nx.utils.equivalence_classes(X, mod3)

# Print out the equivalence classes
for cls in equiv_classes:
    print(frozenset(cls))
<|EOT|>
