B3311331313231311331322331333132313132313331323223313223313133313231232331   >>    B331133131323131133132233133313231313231333132322331322331313331323123233   <<    B3311331313231311331322331333132313132313331323223313223313133313231232333   >>      B3311331313231311331322331333132313132313331323223313223313133313231232332   >>