B3311331313231311331322331333132313331323131323223313133313331323123123231   >>    B331133131323131133132233133313231333132313132322331313331333132312312323   <<    B3311331313231311331322331333132313331323131323223313133313331323123123233   >>      B3311331313231311331322331333132313331323131323223313133313331323123123232   >>