/r/ is phonetically a fricativized alveolar trill [r̝], and may be heard as [ʐ] as an allophone.
A syllable-initial /k/ can be heard as a uvular fricative [χ] before voiceless consonants and as a voiced [ʁ] before voiced consonants. A syllable-final /k/ can be heard as a uvular stop [q] after /æ/ or /ɔ/ vowel sounds.
[ʁ] can also be heard as an allophone of /ɣ/ between /æ/ or /ɔ/ and another vowel.[3]