1. history   Geschichte   Algebra   Biologie   Geometrie   Hint Half-n-half Clue   2. psychology   Psychologie   Astronomie   Chemie   Geschichte   Half-n-half Clue   3. trigonometry   Botanik   Trigonometrie   Philosophie   Physik   Half-n-half Clue   4. calculus   Geologie   Infinitesmalrechnung   Astronomie   Psychologie   Half-n-half Clue   5. chemistry   Trigonometrie   Geometrie   Chemie   Geschichte   Half-n-half Clue   6. philosophy   Philosophie   Psychologie   Geschichte   Astronomie   Half-n-half Clue   7. zoology   Biologie   Astronomie   Botanik   Zoologie   Half-n-half Clue