<｜begin▁of▁sentence｜>### Instruction:
Given a graph with vertices labeled 'a', 'b', 'c', 'd' and edges connecting them as [(0, 1), (0, 2), (1, 3), (2, 3)], can you find all the automorphisms of the graph that map the vertices onto themselves?
### Response:
import igraph as ig

# Create a graph
vertices = ['a', 'b', 'c', 'd']
edges = [(0, 1), (0, 2), (1, 3), (2, 3)]
g = ig.Graph(edges=edges)
g.vs['label'] = vertices

# Get automorphisms of the graph
automorphisms = g.get_automorphisms_vf2()

# Print the automorphisms
print('Automorphisms:', automorphisms)
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