What are the dolls that fit inside?

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Tags

1. #incorrectly
2. #wikipedia
3. #nested
4. #matryoshka
5. #inside
6. #referred
7. #known
8. #nesting
9. #decreasing
10. #sometimes
11. #dolls
12. #russian
13. #placed
14. #wooden
15. #babushka
16. #grandmother
17. #other
18. #refers