C111112111133131121133133313331333133313331312111133133313231323221212111   >>    C11111211113313112113313331333133313331333131211113313331323132322121211   <<    C111112111133131121133133313331333133313331312111133133313231323221212113   >>      C111112111133131121133133313331333133313331312111133133313231323221212112   >>