C11112331312111112111133133313231333132313232233133313221231131   >>    C1111233131211111211113313331323133313231323223313331322123113   <<    C11112331312111112111133133313231333132313232233133313221231133   >>      C11112331312111112111133133313231333132313232233133313221231132   >>