B3311331313231311331322331333132313233313231333131123313331323213311   >>    B331133131323131133132233133313231323331323133313112331333132321331   <<    B3311331313231311331322331333132313233313231333131123313331323213313   >>      B3311331313231311331322331333132313233313231333131123313331323213312   >>