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Trying to implement qwerty distance function in haskell. As a part of this, I came up with a need for a function, that would return an i,j index of specific element in a defined structure (vector, list, array?). And I'm stuck.

```
import qualified Data.Vector as V
qwerty = V.fromList $ map V.fromList
[ "qwertyuiop", "asdfghjkl;'", "zxcvbnm,./" ]
```