B3311331313231311331322331333132313331323133313233313331311331333132212111   >>    B331133131323131133132233133313231333132313331323331333131133133313221211   <<    B3311331313231311331322331333132313331323133313233313331311331333132212113   >>      B3311331313231311331322331333132313331323133313233313331311331333132212112   >>