B3311331313231311331322331333132313231333131323223313133313133313113313221321   >>    B331133131323131133132233133313231323133313132322331313331313331311331322132   <<    B3311331313231311331322331333132313231333131323223313133313133313113313221323   >>      B3311331313231311331322331333132313231333131323223313133313133313113313221322   >>