C111112111133131121133133313331333133313331312111133133313211211111221221   >>    C11111211113313112113313331333133313331333131211113313331321121111122122   <<    C111112111133131121133133313331333133313331312111133133313211211111221223   >>      C111112111133131121133133313331333133313331312111133133313211211111221222   >>