Context: Some linguists restrict the double-dot subscript ⟨◌̤⟩ to murmured sonorants, such as vowels and nasals, which are murmured throughout their duration, and use the superscript hook-aitch ⟨◌ʱ⟩ for the breathy-voiced release of obstruents.

Question: What do some linguists restrict the double-dot subscript ⟨◌̤⟩ to?
Answer: murmured sonorants

Question: What are, according to the text, murmured for their duration?
Answer: vowels and nasals

Question: What uses the ⟨◌ʱ⟩?
Answer: breathy-voiced release of obstruents.

Question: Some linguists restrict what to loud sonorants?
Answer: Unanswerable

Question: What are murmured thought part of their duration?
Answer: Unanswerable

Question: What represents the double-dot hook-aitch?
Answer: Unanswerable

Question: What is used for the loud-voiced release of obstruents?
Answer: Unanswerable

Question: All linguists restrict the double-dot subscript to what?
Answer: Unanswerable