237
237
'e':['d'], 'f':['e'], 'g':['f'], 'h':['d'], 'i':['g'],
238
238
'j':['h'], 'k':['h', 'i'], 'l':['k'], 'm':['l'], 'n':['m'],
239
239
'o':['n'], 'p':['o'], 'q':['p'], 'r':['q'], 's':['r'],
240
't':['i', 's'], 'u':['s', 'j'],
240
't':['i', 's'], 'u':['s', 'j'],
243
243
# Graph where different walkers will race to find the common and uncommon