Examples of use of by mistake
1. "It could happen by mistake, it would only happen by mistake," Abu Nemaan said.
2. Some documents showed four of the accused were executed by mistake, while two were released by mistake.
3. One letter reveals that four of the accused were executed by mistake, while two were released by mistake.
4. "Some of them must have clicked on it by mistake.
5. My favorite story is that they were made by mistake.