All five words begin with 'Mi'. Compare from the third letter onward:

1. Mistake → M-I-S-T-A-K-E

2. Mild → M-I-L-D

3. Mist → M-I-S-T

4. Migrate → M-I-G-R-A-T-E

5. Milk → M-I-L-K

Third letter order: G < L < S. So Migrate comes first.

Words with third letter L: Mild (Mi-L-D) and Milk (Mi-L-K). D < K, so Mild before Milk → order: Mild(2), Milk(5).

Words with third letter S: Mist (Mi-S-T) and Mistake (Mi-S-T-A-K-E). Both share Mi-S-T; Mist ends after T, while Mistake continues with A. A shorter word that is a prefix of a longer word comes first in a dictionary. So Mist(3) before Mistake(1).

Final dictionary order: Migrate(4), Mild(2), Milk(5), Mist(3), Mistake(1) → 4, 2, 5, 3, 1.