Context: In some languages, such as English, aspiration is allophonic. Stops are distinguished primarily by voicing, and voiceless stops are sometimes aspirated, while voiced stops are usually unaspirated.

Question: Aspiration is what, in English and some other languages?
Answer: allophonic

Question: How are stops distinguished?
Answer: voicing

Question: Voiceless stops are at times what?
Answer: aspirated

Question: Voiced stops are most often what?
Answer: unaspirated

Question: In what language in unaspiration allophonic?
Answer: Unanswerable

Question: Voiceless languages are sometimes what?
Answer: Unanswerable

Question: Symbols are distinguished primarily by what?
Answer: Unanswerable

Question: Voiced breaths are usually what?
Answer: Unanswerable

Question: What are sometimes allophonic?
Answer: Unanswerable