B33113313132313113313223313331311331333131113331333133313231133131322121   >>    B3311331313231311331322331333131133133313111333133313331323113313132212   <<    B33113313132313113313223313331311331333131113331333133313231133131322123   >>      B33113313132313113313223313331311331333131113331333133313231133131322122   >>