Hello
Thank you to @Duselbauer for creating the course. Could you eliminate the following ambiguity in the questions? For instance 0,4 and 7 have two forms in Japanese. Additionally, Yes has two forms in Japanese ‘ee’ and ‘hai’. To eliminate ambiguity, the question for rei could be “0 (not zero)”; the question for nana could be “7 (not shichi)”; and so forth.
Regards
William