그래프 이론을 사용하여 상호 연결된 목록을 병합하는 방법은 무엇입니까?

Input: [['a','b','c'],['b','d','e'],['k'],['o','p'],['e','f'],['p','a'],['d','g']]
Expected Output: [['a','b','c','d','e','f','g','o','p'],['k']] 

import networkx 
from networkx.algorithms.components.connected import connected_components

# Convert the list of lists into a graph
def to_graph(l):
    G = networkx.Graph()
    for part in l:
        # Add nodes
        G.add_nodes_from(part)
        # Add edges between nodes
        G.add_edges_from(to_edges(part))
    return G

# Generate edges from a list of nodes
def to_edges(l):
    it = iter(l)
    last = next(it)
    for current in it:
        yield last, current
        last = current

# Create the graph and find connected components
G = to_graph(l)
components = connected_components(G)

# Print the merged lists (connected components)
print(list(components))

[['a', 'c', 'b', 'e', 'd', 'g', 'f', 'o', 'p'], ['k']]