C11112331333132311331333133313331333132313311331333133313231323213113233121   >>    C1111233133313231133133313331333133313231331133133313331323132321311323312   <<    C11112331333132311331333133313331333132313311331333133313231323213113233123   >>      C11112331333132311331333133313331333132313311331333133313231323213113233122   >>