C111112111133131121133133313331333133313121111331123313232212111   >>    C11111211113313112113313331333133313331312111133112331323221211   <<    C111112111133131121133133313331333133313121111331123313232212113   >>      C111112111133131121133133313331333133313121111331123313232212112   >>