let me ask a question of an usage of schwa as a phoneme and [r].
Schwa can be regarded as an independent phoneme, apart from weak forms of other vowels, I heard. And here, I treat this idea as true.
Then my question is: Is this schwa phoneme can be followed by consonant [r] in the same syllable?
If so, I think that this schwa phoneme can take two forms, one just the ordinary schwa or little bit rhotic schwa, the other completely rhotic schwa, that is rhotacized schwa, because other vowels can take these two forms when being followed by consonant [r] in the same syllable.
Please think about it.