03. Phone Shop

phones = input().split(', ')

str_input = input()

while str_input != 'End':
    tokens = str_input.split(' - ')
    command = tokens[0]
    phone = tokens[1]
    if command == 'Add':
        if phone not in phones:
            phones.append(phone)
    elif command == 'Remove':
        if phone in phones:
            phones.remove(phone)
    elif command == 'Bonus phone':
        old_phone, new_phone = phone.split(':')
        if old_phone in phones:
            phones.insert(phones.index(old_phone) + 1, new_phone)
    elif command == 'Last':
        if phone in phones:
            phones.remove(phone)
            phones.append(phone)

    str_input = input()

print(', '.join(phones))