B3311331313231311331322331333132313331322331323133313221323132313113311   >>    B331133131323131133132233133313231333132233132313331322132313231311331   <<    B3311331313231311331322331333132313331322331323133313221323132313113313   >>      B3311331313231311331322331333132313331322331323133313221323132313113312   >>