A data audit flagged possible duplicate accounts in the system. Using the users table, find every email address that appears more than once.
Return email, ordered alphabetically.
users
| column | type |
|---|---|
| id | INTEGER |
| TEXT |
| id | |
|---|---|
| 1 | alice@example.com |
| 2 | bob@example.com |
| 3 | alice@example.com |
| 4 | carol@example.com |
| 5 | bob@example.com |
| alice@example.com |
| bob@example.com |