B3311331313231311331322331333132313231323331333131333133313232212112323231   >>    B331133131323131133132233133313231323132333133313133313331323221211232323   <<    B3311331313231311331322331333132313231323331333131333133313232212112323233   >>      B3311331313231311331322331333132313231323331333131333133313232212112323232   >>