Consider the following Spanish words, written in IPA (with their English translation):

[![enter image description here][1]][1]

[![enter image description here][2]][2]

And the same question for *middle position* and *final position*

**My answer is:**

 1. Initial position: Looking at the given words, I can deduce that if an "R sound" appears in an initial position, ̃r muse be used.
 2. For same reasons, ɾ must be used at the end of a word.
 3. As for middle position, one can see that both of the consonants appear.

Is that correct?

[![enter image description here][3]][3]

**My answer is:**  

Observing that only one consonant appear at the initial/final position and that changing one with another at middle position changes word's meaning (i.e. (1) and (10)), my conclusion is that ɾ and ̃r are two different phonemes *and not* allophones of one phoneme. Is my analysis correct? 

Thanks!

 

  [1]: https://i.sstatic.net/OAyMg.png
  [2]: https://i.sstatic.net/a5iWl.png
  [3]: https://i.sstatic.net/wgDvF.png