The word "oehlen" may seem like a tricky one to spell, but its pronunciation can be broken down using the International Phonetic Alphabet (IPA). The first sound is the letter "o" pronounced as "/o/", which is a mid-back rounded vowel sound. The next sound is "eh", pronounced as "/ɛ/", which is a short e sound. Finally, the word ends with "len", pronounced as "/lɛn/", with the "l" sound followed by a short "e" sound and ending with an "n" sound. Therefore, the correct spelling of "oehlen" is accurately reflected in its IPA transcription.