C11112331333132311331333133313331333132313311211331311112123231   >>    C1111233133313231133133313331333133313231331121133131111212323   <<    C11112331333132311331333133313331333132313311211331311112123233   >>      C11112331333132311331333133313331333132313311211331311112123232   >>