C111123313121111121111331333133313331323133313231333133313331311312121   >>    C11112331312111112111133133313331333132313331323133313331333131131212   <<    C111123313121111121111331333133313331323133313231333133313331311312123   >>      C111123313121111121111331333133313331323133313231333133313331311312122   >>