C11112331333132311331333133313331333132313231123313331311211311312121   >>    C1111233133313231133133313331333133313231323112331333131121131131212   <<    C11112331333132311331333133313331333132313231123313331311211311312123   >>      C11112331333132311331333133313331333132313231123313331311211311312122   >>