C112313233211113313121111331333133313232233132313331311331323133313231311311   >>    C11231323321111331312111133133313331323223313231333131133132313331323131131   <<    C112313233211113313121111331333133313232233132313331311331323133313231311313   >>      C112313233211113313121111331333133313232233132313331311331323133313231311312   >>