B3311331313231311331322331333132313232233131311331333131133132313232112323231   >>    B331133131323131133132233133313231323223313131133133313113313231323211232323   <<    B3311331313231311331322331333132313232233131311331333131133132313232112323233   >>      B3311331313231311331322331333132313232233131311331333131133132313232112323232   >>