C112313233211113313121111331333133313232233132313331311331323133313331323311231   >>    C11231323321111331312111133133313331323223313231333131133132313331333132331123   <<    C112313233211113313121111331333133313232233132313331311331323133313331323311233   >>      C112313233211113313121111331333133313232233132313331311331323133313331323311232   >>