C11112331333132311331333133313331333132313231123313331323331322121311   >>    C1111233133313231133133313331333133313231323112331333132333132212131   <<    C11112331333132311331333133313331333132313231123313331323331322121313   >>      C11112331333132311331333133313331333132313231123313331323331322121312   >>