B3311331313231311331322331333132313132313331323223313231313213231   >>    B331133131323131133132233133313231313231333132322331323131321323   <<    B3311331313231311331322331333132313132313331323223313231313213233   >>      B3311331313231311331322331333132313132313331323223313231313213232   >>