friend_names = input().split(", ")
command = input().split()
lost_names = 0
def in_blacklist(blacklist, names_is):
    return True if names_is in blacklist else False
def in_friendlist(friendlist, name_is1):
    return True if name_is1 in friendlist else False

while not command == "Report":
    command_type = command[0]
    name = command[1]

    if command_type == "Blacklist":
        while not command[1]=="":
            if in_blacklist(friend_names,name):
                print(f"{name} was blacklisted")
            elif not in_friendlist(friend_names, name):
                print(f"{name} was not found.")

    if command_type == "Error":
        if name is not in_blacklist(friend_names,name):
            print(f"{name} was lost due to an error.")
    if command_type == "Change":
        index = friend_names[0]
        if index =