B3311331313231311331322331333132313331323131323223313113313223121   >>    B331133131323131133132233133313231333132313132322331311331322312   <<    B3311331313231311331322331333132313331323131323223313113313223123   >>      B3311331313231311331322331333132313331323131323223313113313223122   >>