C11112331333132311331333133313331333132313233313233313231333132331333121   >>    C1111233133313231133133313331333133313231323331323331323133313233133312   <<    C11112331333132311331333133313331333132313233313233313231333132331333123   >>      C11112331333132311331333133313331333132313233313233313231333132331333122   >>