B3311331313231311331322331333132333132332113313331333133313232313231   >>    B331133131323131133132233133313233313233211331333133313331323231323   <<    B3311331313231311331322331333132333132332113313331333133313232313233   >>      B3311331313231311331322331333132333132332113313331333133313232313232   >>