B3311331313231311331322331333132333132332113313331333133313223313131231   >>    B331133131323131133132233133313233313233211331333133313331322331313123   <<    B3311331313231311331322331333132333132332113313331333133313223313131233   >>      B3311331313231311331322331333132333132332113313331333133313223313131232   >>