# 新增字典键值对 list[key_new] = value_new
word_list = {
    "a": ["apple", "abandon", "ant"],
    "b": ["banana", "bee", "become"],
    "c": ["cat", "come"],
    "d": "down"
}
letter = input()
word = input()
word_list[letter] = word
print(word_list)