AU

The letter combination au is fairly common. It represents the sound /ɔ/.

Australia -> Austrâlha /ɔˈstreɪljə/
Autumn -> Automn /ˈɔɾəm/
automatic -> automàtic /ˌɔɾəˈmæɾɪk/

u becomes ɯ when followed by n:
lawn -> laɯn /lɔn/
dawn -> daɯn /dɔn/
pawn -> paɯn /pɔn/

-auhe is commonly used for verb constructions where -aɯ is the noun form:
to saw -> ta sauhe /tə sɔ/
the saw -> þe saɯ /ðə sɔ/
to draw -> ta drauhe /tə drɔ/
the draw -> þe draɯ /ðə drɔ/

When au is followed by r, it's pronounced as /ɔr/
war -> ɯaur /wɔr/
roar -> raur /rɔr/
boar -> baur /bɔr/
oar -> aur /ɔr/

In some words where "aur" is stressed, it's written as aû:
reward -> reɯaûd
warden -> ɯaûden
warn -> ɯaûn
warm -> ɯaûm