B3311331313231311331322331333131133132333132333133313223313231311331321123311   >>    B331133131323131133132233133313113313233313233313331322331323131133132112331   <<    B3311331313231311331322331333131133132333132333133313223313231311331321123313   >>      B3311331313231311331322331333131133132333132333133313223313231311331321123312   >>