C11112331333132311331333133313331333132313311211331311331313311   >>    C1111233133313231133133313331333133313231331121133131133131331   <<    C11112331333132311331333133313331333132313311211331311331313313   >>      C11112331333132311331333133313331333132313311211331311331313312   >>