B3311331313231311331322331333131133132333132333133313223313233313111112111   >>    B331133131323131133132233133313113313233313233313331322331323331311111211   <<    B3311331313231311331322331333131133132333132333133313223313233313111112113   >>      B3311331313231311331322331333131133132333132333133313223313233313111112112   >>