<｜begin▁of▁sentence｜>### Instruction:
As a curator managing a collection of historical objects in a museum, a task has been assigned to determine the isomorphism class of a small graph with 6 vertices and a set of edges. Could you kindly use the isoclass function in networkx to identify the isomorphism class of the graph in order to aid in our research and documentation efforts? Thank you.
### Response:
import igraph as ig

# Create a small graph with 6 vertices
vertices = list(range(6))
edges = [(0, 1), (0, 2), (0, 3), (1, 2), (1, 4), (2, 5)]
g = ig.Graph(edges=edges)

# Get the isomorphism class of the graph considering all vertices
class_number = g.isoclass()
print('Isomorphism class number:', class_number)
<|EOT|>
