C111123313331323113313331333133313331322331313331311331311331312323321   >>    C11112331333132311331333133313331333132233131333131133131133131232332   <<    C111123313331323113313331333133313331322331313331311331311331312323323   >>      C111123313331323113313331333133313331322331313331311331311331312323322   >>