B3311331313231311331322331333132313231333131323223313233313223231   >>    B331133131323131133132233133313231323133313132322331323331322323   <<    B3311331313231311331322331333132313231333131323223313233313223233   >>      B3311331313231311331322331333132313231333131323223313233313223232   >>