According to SOWPODS (the combination of Scrabble dictionaries
used around the world) there are 8 words with the pattern
A-A--O-I-. That is, nine letter words with 1st letter A and 3rd
letter A and 6th letter O and 8th letter I. In alphabetical order,
they are:
akaryotic
amaurosis
amaurotic
anabiosis
anabiotic
anaerobia
anaerobic
anaphoric