| Clue | Source | Date |
|---|---|---|
| Communicate secretly in class, perhaps | ||
| Misbehave in class, in a way | LA Times Daily | 25 Nov 2022 |
| Furtively communicate in class, or what you need to do seven times in this puzzle | Wall Street Journal | 01 Oct 2020 |
| Secretly communicate in class, pre-texting | LA Times Daily | 23 Feb 2019 |
| Secretly communicate in class, pre-texting | The Washington Post | 23 Feb 2019 |
| Secretly communicate in class, pre-texting |