C11112331333132311331333133313331333132313233313233313231323331323312121   >>    C1111233133313231133133313331333133313231323331323331323132333132331212   <<    C11112331333132311331333133313331333132313233313233313231323331323312123   >>      C11112331333132311331333133313331333132313233313233313231323331323312122   >>