1. on the interpretation of this Basic Law in the event of disputes concerning the extent of the rights and duties of a supreme federal body or of other parties vested with rights of their own by this Basic Law or by the rules of procedure of a supreme federal body;

2. in the event of disagreements or doubts concerning the formal or substantive compatibility of federal law or Land law with this Basic Law or the compatibility of Land law with other federal law on application of the Federal Government, of a Land government or of one fourth of the Members of the Bundestag;

2a. in the event of disagreements as to whether a law meets the conditions set out in paragraph (2) of Article 72, on application of the Bundesrat or of the govern­ment or legislature of a Land;

3. in the event of disagreements concerning the rights and duties of the Federation and the Länder, especially in the execution of federal law by the Länder and in the exercise of federal oversight;

4. on other disputes involving public law between the Federation and the Länder, between different Länder or within a Land, unless there is recourse to another court;

4a. on constitutional complaints, which may be filed by any person alleging that one of his basic rights or one of his rights under paragraph (4) of Article 20 or under Article 33, 38, 101, 103 or 104 has been infringed by public authority;

4b. on constitutional complaints filed by municipalities or associations of municipalities on the ground that their right to self-government under Article 28 has been infringed by a law; in the case of infringement by a Land law, however, only if the law cannot be challenged in the constitutional court of the Land;

4c. on constitutional complaints filed by associations concerning their non-recognition as political parties for an election to the Bundestag;

5. in the other instances provided for in this Basic Law.