Only in LAI 35
What this means for learners
LAI and Aleut share 17 sounds — roughly 33% of Aleut's inventory overlaps with LAI. Shared sounds are ones a speaker already knows from their native language and will generally produce and perceive accurately without explicit training.
The 19 sounds found only in Aleut represent the greatest pronunciation challenge for LAI speakers. The adult brain tends to map unfamiliar sounds onto the closest native equivalent — a process that produces the characteristic "accent" of a second-language speaker. Learning to hear and produce these sounds as distinct requires focused ear training, not just repetition.
Conversely, LAI has 35 sounds not used in Aleut. Native Aleut speakers learning LAI will face the mirror-image challenge with these sounds.
Phoneme inventories from PHOIBLE. Data reflects one documented inventory per language; some variation exists across dialects and sources.