B3311331313231311331322331333132313231323331333131123313331323132322323231   >>    B331133131323131133132233133313231323132333133313112331333132313232232323   <<    B3311331313231311331322331333132313231323331333131123313331323132322323233   >>      B3311331313231311331322331333132313231323331333131123313331323132322323232   >>