C11112331333132311331333133313331333132313231123313331323221213111   >>    C1111233133313231133133313331333133313231323112331333132322121311   <<    C11112331333132311331333133313331333132313231123313331323221213113   >>      C11112331333132311331333133313331333132313231123313331323221213112   >>