C111123313121111121111331333133313331333131121133133313331333132313232232311   >>    C11112331312111112111133133313331333133313112113313331333133313231323223231   <<    C111123313121111121111331333133313331333131121133133313331333132313232232313   >>      C111123313121111121111331333133313331333131121133133313331333132313232232312   >>