irregular verbs (au!)

There isn't anything to remove here as it's a short piece of text about 'irregular verbs' and a seemingly random interjection 'au!'. A possible interpretation could be that specifying that this is a grammar lesson about irregular English verbs, and 'au!' is a negative exclamation due to potential difficulty or pain of learning these. However, the reference to 'au!' is not clear. Looking to specify and translate it into a detailed description for an AI image generator: "A chalkboard in