给定一篇英文文章，返回其中前10个最常见的单词和它们各自的出现次数。


The quick brown fox jumps over the lazy dog. The lazy dog barks at the quick brown fox.
1. the - 4
2. quick - 2
3. brown - 2
4. fox - 2
5. lazy - 2
6. dog - 2
7. jumps - 1
8. over - 1
9. barks - 1
10. at - 1