B3311331313231311331322331333132313231333131323223313331323132322231311321   >>    B331133131323131133132233133313231323133313132322331333132313232223131132   <<    B3311331313231311331322331333132313231333131323223313331323132322231311323   >>      B3311331313231311331322331333132313231333131323223313331323132322231311322   >>