C11112331333132311331333133313331333132312323133313331333132311331321123123121   >>    C1111233133313231133133313331333133313231232313331333133313231133132112312312   <<    C11112331333132311331333133313331333132312323133313331333132311331321123123123   >>      C11112331333132311331333133313331333132312323133313331333132311331321123123122   >>