The spelling of the phrase "study at ask" can be explained using the International Phonetic Alphabet (IPA). The first syllable, "stud," is pronounced with the short vowel sound /ʌ/, as in "uh." The second syllable, "y," uses the long vowel sound /aɪ/, as in "eye." The final syllable, "ask," uses the sound /æ/ as in "cat." Therefore, the correct spelling of "study at ask" is spelled as "stud-i-a-sk". This spelling can be useful for English language learners to understand the pronunciation of words accurately.