C11112331333132311331333133313331323132313331211111211111323221311311   >>    C1111233133313231133133313331333132313231333121111121111132322131131   <<    C11112331333132311331333133313331323132313331211111211111323221311313   >>      C11112331333132311331333133313331323132313331211111211111323221311312   >>