B3311331313231311331322331333132333132332113313331333133313231232322331   >>    B331133131323131133132233133313233313233211331333133313331323123232233   <<    B3311331313231311331322331333132333132332113313331333133313231232322333   >>      B3311331313231311331322331333132333132332113313331333133313231232322332   >>