B3311331313231311331322331333132313231323331333131123313231322331121   >>    B331133131323131133132233133313231323132333133313112331323132233112   <<    B3311331313231311331322331333132313231323331333131123313231322331123   >>      B3311331313231311331322331333132313231323331333131123313231322331122   >>