C111123313331323113313331333133313331323323113313331333131322331323123121   >>    C11112331333132311331333133313331333132332311331333133313132233132312312   <<    C111123313331323113313331333133313331323323113313331333131322331323123123   >>      C111123313331323113313331333133313331323323113313331333131322331323123122   >>