How can I become a citizen of Switzerland?

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Tags

1. #regular
2. #country
3. #birth
4. #through
5. #between
6. #blood
7. #foreigners
8. #apply
9. #before
10. #direct
11. #naturalisation
12. #count
13. #switzerland
14. #years
15. #citizenship
16. #least
17. #either
18. #spent
19. #marriage
20. #double