How many vowel sounds are in the German language?

Here's a breakdown:

* Front vowels: i, I, e, ɛ, æ, ʏ, ʊ

* Back vowels: u, ɔ, o, a, ɑ

* Diphthongs: ai, au, oi, ei, eu

It's important to note that these are the vowel sounds, not the letters. Some letters can represent multiple sounds.