C111123313331323113313331333133313331323132333133313331311222331211   >>    C11112331333132311331333133313331333132313233313331333131122233121   <<    C111123313331323113313331333133313331323132333133313331311222331213   >>      C111123313331323113313331333133313331323132333133313331311222331212   >>