B3311331313231311331322331333132313232233132313133313331323133112323311   >>    B331133131323131133132233133313231323223313231313331333132313311232331   <<    B3311331313231311331322331333132313232233132313133313331323133112323313   >>      B3311331313231311331322331333132313232233132313133313331323133112323312   >>