B3311331313231311331322331333132313331322331323133313331323221322221323311   >>    B331133131323131133132233133313231333132233132313331333132322132222132331   <<    B3311331313231311331322331333132313331322331323133313331323221322221323313   >>      B3311331313231311331322331333132313331322331323133313331323221322221323312   >>