C11112331333132311331333133313331333132233131331211111333112113121311   >>    C1111233133313231133133313331333133313223313133121111133311211312131   <<    C11112331333132311331333133313331333132233131331211111333112113121313   >>      C11112331333132311331333133313331333132233131331211111333112113121312   >>