B3311331313231311331322331333132313233313233213331333132313331323221323121   >>    B331133131323131133132233133313231323331323321333133313231333132322132312   <<    B3311331313231311331322331333132313233313233213331333132313331323221323123   >>      B3311331313231311331322331333132313233313233213331333132313331323221323122   >>