B3311331313231311331322331333132313231323331333131121333132313331323221121   >>    B331133131323131133132233133313231323132333133313112133313231333132322112   <<    B3311331313231311331322331333132313231323331333131121333132313331323221123   >>      B3311331313231311331322331333132313231323331333131121333132313331323221122   >>