C111123313121111121111331333132313331323133313331322333121133133313232132313121   >>    C11112331312111112111133133313231333132313331333132233312113313331323213231312   <<    C111123313121111121111331333132313331323133313331322333121133133313232132313123   >>      C111123313121111121111331333132313331323133313331322333121133133313232132313122   >>