B3311331313231311331322331333132313132313331323223313232212323132313231231   >>    B331133131323131133132233133313231313231333132322331323221232313231323123   <<    B3311331313231311331322331333132313132313331323223313232212323132313231233   >>      B3311331313231311331322331333132313132313331323223313232212323132313231232   >>