print("Hello world!")

phone_book = {
                'head': ['328-45684635', 'red.man@bt.com'], 
                 'rap': ['347-987645', 'rap@ste.com'],
                'mouse': ['335-6958475', 'gatto@cat.com']
                }

print(phone_book['testa'])

#DICT['testa'] --> list of thing containing phone and mail
print(phone_book['head'][0])
print(phone_book['rap'][0])
print(phone_book['mouse'][1])
