B3311331313231311331322331333132313331323131323223313331323132311213231   >>    B331133131323131133132233133313231333132313132322331333132313231121323   <<    B3311331313231311331322331333132313331323131323223313331323132311213233   >>      B3311331313231311331322331333132313331323131323223313331323132311213232   >>