C11112331333132311331333133313331333132313121111331333132233123211131   >>    C1111233133313231133133313331333133313231312111133133313223312321113   <<    C11112331333132311331333133313331333132313121111331333132233123211133   >>      C11112331333132311331333133313331333132313121111331333132233123211132   >>