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الفئة: North Central NA
| الفئة | #(مسابقات) | #(مسائل) | |
|---|---|---|---|
| North Central NA 2019 | A B C D E F G H I J K | 11 | |
| North Central NA 2020 | A B C D E F G H I J K L | 12 | |
| North Central NA 2021 | A B C D E F G H I J K L M | 13 | |
| North Central NA 2022 | A B C D E F G H I J | 10 |