C11112331333132311331333133313331333132313311211331313331323223311   >>    C1111233133313231133133313331333133313231331121133131333132322331   <<    C11112331333132311331333133313331333132313311211331313331323223313   >>      C11112331333132311331333133313331333132313311211331313331323223312   >>