<｜begin▁of▁sentence｜>### Instruction:
Given a many-to-one mapping where each key is a lowercase letter and each value is an integer (e.g., {'a': 1, 'b': 1, 'c': 2, 'd': 3, 'e': 3}), how can you convert it to a one-to-many mapping using NetworkX's utility function 'groups'?
### Response:
from networkx.utils import groups
many_to_one = {'a': 1, 'b': 1, 'c': 2, 'd': 3, 'e': 3}
inverse_mapping = groups(many_to_one)
print(inverse_mapping)
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