B3311331313231311331322331333132313331323133313233313223311211311   >>    B331133131323131133132233133313231333132313331323331322331121131   <<    B3311331313231311331322331333132313331323133313233313223311211313   >>      B3311331313231311331322331333132313331323133313233313223311211312   >>