>>25182650>every type>every type combinationThat's 171 eeveelutions. That's an entire pokedex of eeveelutions. An entire region overrun with nothing but eevees.
If you include switched primary and secondary typing as different combinations (fire/water and water/fire for example) that number increases to 324 possible evolutions.
Leave the poor Eevees alone, their genetics are already unstable enough.