How to declare an attribute of data type ADT (abstract data type) before created within an ADT using Oracle?

I was trying to create this table called PAIS that is nested to tables that store only abstract data types. The problem is when I execute this script in oracle it gives me warning in the data type row_exp and in others not. Therefore, when creating the PAIS table, it does not leave me because row_exp is a non-valid data type, it tells me with the message "invalid data type".

I think this error is due to the fact that within exp I have a data type attribute type_value that is also an ADT. How could I solve this?

create or replace type tipo_valor as OBJECT(
        ano int,
        valor int
    );/
create or replace type exp as OBJECT(
    tipovalor tipo_valor,
    pais varchar2(30)
);/
create or replace type moneda as OBJECT(
    nombre varchar2(20),
    simbolo varchar2(10)
);/

create or replace type fila_tipo_valor as table of tipo_valor;/
create or replace type fila_exp as table of exp;/


create table PAIS (
  id int,
  nombre varchar2(20),
  continente varchar2(20),
  superficie fila_tipo_valor,
  produccion fila_tipo_valor,
  exp_ano fila_exp,
  moneda moneda,
  descripcion varchar2(200)
) nested table exp_ano store as exp_ano_pais,
  nested table produccion store as produccion_pais,
  nested table superficie store as superficie_pais;