B3311331313231311331322331333132313331322331323133313112211232333132313111   >>    B331133131323131133132233133313231333132233132313331311221123233313231311   <<    B3311331313231311331322331333132313331322331323133313112211232333132313113   >>      B3311331313231311331322331333132313331322331323133313112211232333132313112   >>