C11112331312111112111133133313231333132313232233133313123231333132311232111221   >>    C1111233131211111211113313331323133313231323223313331312323133313231123211122   <<    C11112331312111112111133133313231333132313232233133313123231333132311232111223   >>      C11112331312111112111133133313231333132313232233133313123231333132311232111222   >>