The spelling of the phrase "are one duty to" can be confusing because of the way it is pronounced. The phonetic transcription is /ɑr wʌn ˈduːti tu/. The word "are" sounds like the letter "R" and the word "one" is pronounced like "wun". The word "duty" has the stress on the first syllable and ends with the sound "ty". The word "to" is pronounced like "tu". When speaking this phrase, it is important to enunciate each word clearly to avoid confusion.