C111112111133131121133133313331333131333132322331333131133221211   >>    C11111211113313112113313331333133313133313232233133313113322121   <<    C111112111133131121133133313331333131333132322331333131133221213   >>      C111112111133131121133133313331333131333132322331333131133221212   >>