B3311331313231311331322331333132313132313331323223313231333131232322333231   >>    B331133131323131133132233133313231313231333132322331323133313123232233323   <<    B3311331313231311331322331333132313132313331323223313231333131232322333233   >>      B3311331313231311331322331333132313132313331323223313231333131232322333232   >>