C11112331333132311331333133313331333132312323133313233313123113311   >>    C1111233133313231133133313331333133313231232313331323331312311331   <<    C11112331333132311331333133313331333132312323133313233313123113313   >>      C11112331333132311331333133313331333132312323133313233313123113312   >>