C111123313331323113313331333133313331323132333133311211331333211211   >>    C11112331333132311331333133313331333132313233313331121133133321121   <<    C111123313331323113313331333133313331323132333133311211331333211213   >>      C111123313331323113313331333133313331323132333133311211331333211212   >>