import sys
from sage.all import *

#Graphs G and H
G = Graph([('a', 'b'),('b', 'c'), ('b', 'd')])
H = Graph([(1, 2), (2, 3) ])

#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#PLEASE DO NOT EDIT ANYTHING AFTER THIS LINE!!
#!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

print("\n\n Graph G \n")
G.show()



print("\n\n Graph H \n\n")
H.show()