B3311331313231311331322331333132323133313223313231323133313231323233231   >>    B331133131323131133132233133313232313331322331323132313331323132323323   <<    B3311331313231311331322331333132323133313223313231323133313231323233233   >>      B3311331313231311331322331333132323133313223313231323133313231323233232   >>