C3132121111133313233121111331333133313331333133313331123313223111   >>    C313212111113331323312111133133313331333133313331333112331322311   <<    C3132121111133313233121111331333133313331333133313331123313223113   >>      C3132121111133313233121111331333133313331333133313331123313223112   >>