What is the name of the group of river crabs?

1. The country of crabs.

2. The little crab’s nest.

3. Crab comes to mind.

4. Crab is delicious.

5. Crab encounters life.

6. Crabs come and go.

7. Crab heaven and crab earth.

8. The source of crabs.

9. The rhyme of crab.