There was some debate at the time whether there should be more control characters rather than the lowercase alphabet.
ðɛɹwˌʌz sˌʌm dᵻbˈeɪt æt ðə tˈaɪm wˈɛðɚ ðɛɹ ʃˌʊd biː mˈoːɹ kəntɹˈoʊl kˈæɹɪktɚz ɹˈæðɚ ðɐn ðə lˈoʊɚkˌeɪs ˈælfəbˌɛt.