C11112331312111112111133133313231333132313232233133313133313111   >>    C1111233131211111211113313331323133313231323223313331313331311   <<    C11112331312111112111133133313231333132313232233133313133313113   >>      C11112331312111112111133133313231333132313232233133313133313112   >>