C11112331333132311331333133313331333132313311211331313331323132322231111   >>    C1111233133313231133133313331333133313231331121133131333132313232223111   <<    C11112331333132311331333133313331333132313311211331313331323132322231113   >>      C11112331333132311331333133313331333132313311211331313331323132322231112   >>