The spelling of the word "dost to turn" is dictated by the phonetic sounds in the English language. The IPA phonetic transcription of this phrase would be /dʌst tə tɜrn/. The "o" in "dost" sounds like the "u" in "hut," while the "s" is a voiceless alveolar sibilant. The "t" in "to" is a voiceless alveolar stop, the "u" in "turn" is pronounced like "er," and the "rn" is a voiced alveolar nasal consonant. These elements come together to produce the distinct pronunciation of "dost to turn."