B3311331313231311331322331333132313233313231333131133133313231333112323223311   >>    B331133131323131133132233133313231323331323133313113313331323133311232322331   <<    B3311331313231311331322331333132313233313231333131133133313231333112323223313   >>      B3311331313231311331322331333132313233313231333131133133313231333112323223312   >>