C112313233211113313121111331333133313232233132313331311331323133313331312131   >>    C11231323321111331312111133133313331323223313231333131133132313331333131213   <<    C112313233211113313121111331333133313232233132313331311331323133313331312133   >>      C112313233211113313121111331333133313232233132313331311331323133313331312132   >>