B3311331313231311331322331333131133133313233213231333132313231323223231   >>    B331133131323131133132233133313113313331323321323133313231323132322323   <<    B3311331313231311331322331333131133133313233213231333132313231323223233   >>      B3311331313231311331322331333131133133313233213231333132313231323223232   >>