How many language levels does one German Language Course have?

The German-Course with the language level A1 (total beginner) has two parts: A1.1 and A1.2

The German-Course with the language level A2 (advanced beginner) has two parts: A2.1 and A2.2 The German-Course for the language level B1 (medium level, communicative level) consists of two parts: B1.1 and B1.2

The German-Course for the language level B2 (medium level, advanced communicative level) is divided into two parts: B2.1 and B2.2

German-Courses for the language level C1 (advanced level) and C2 (native speaker level)