C11112331333132311331333133313331333132313231123313232313221211   >>    C1111233133313231133133313331333133313231323112331323231322121   <<    C11112331333132311331333133313331333132313231123313232313221213   >>      C11112331333132311331333133313331333132313231123313232313221212   >>