import sys

dict1={'a': ['apple', 'abandon', 'ant'], 'b': ['banana', 'bee', 'become'], 'c': ['cat', 'come'], 'd': 'down'}

key1=input()
value1=input()

if key1 not in dict1.keys():
    dict1[key1]=value1
else:
    dict1[key1].append(value1)

print(dict1)