B3311331313231311331322331333132313233313231333131123313331323223313121211   >>    B331133131323131133132233133313231323331323133313112331333132322331312121   <<    B3311331313231311331322331333132313233313231333131123313331323223313121213   >>      B3311331313231311331322331333132313233313231333131123313331323223313121212   >>