The spelling of the word "study at treason" can be a bit tricky, but it is easily explained through IPA phonetic transcription. The first word is pronounced /ˈstʌdi/ and the second is pronounced /ət/ with a schwa sound. The final word, "treason," is spelled as it sounds, with the "ea" sounding like a long "e" /i/ and the stress on the first syllable, pronounced as /ˈtriːzən/. So altogether, the correct pronunciation is /ˈstʌdi ət ˈtriːzən/.