4. Arrange positive integers in sequence without any gaps as 1234567891011121314,, the sequence "1992" first appears between 199 and 200. Then, the second time "1992" appears consecutively is between $\qquad$ and $\qquad$.
【Analysis】When four consecutive digits appear as “1992”, start by considering “1992”.
The first occurrence should be split between “9 and 2”: 199 2, i.e., 199, 200
The second occurrence should be split between “9 and 9”: 19!92, i.e., 919, 920