C11112331333132311331333133313331333132313233313331331121113121   >>    C1111233133313231133133313331333133313231323331333133112111312   <<    C11112331333132311331333133313331333132313233313331331121113123   >>      C11112331333132311331333133313331333132313233313331331121113122   >>