C111123313331323113313331333133313331323112133313331333112231321   >>    C11112331333132311331333133313331333132311213331333133311223132   <<    C111123313331323113313331333133313331323112133313331333112231323   >>      C111123313331323113313331333133313331323112133313331333112231322   >>