C11112331312111112111133133313231333132313232233132322331313331313233121   >>    C1111233131211111211113313331323133313231323223313232233131333131323312   <<    C11112331312111112111133133313231333132313232233132322331313331313233123   >>      C11112331312111112111133133313231333132313232233132322331313331313233122   >>