B3311331313231311331322331333131133132313331313232233131333132313231323223121   >>    B331133131323131133132233133313113313231333131323223313133313231323132322312   <<    B3311331313231311331322331333131133132313331313232233131333132313231323223123   >>      B3311331313231311331322331333131133132313331313232233131333132313231323223122   >>