C11112331333132311331333133313331323132313331211111323132323311   >>    C1111233133313231133133313331333132313231333121111132313232331   <<    C11112331333132311331333133313331323132313331211111323132323313   >>      C11112331333132311331333133313331323132313331211111323132323312   >>