| with time | 9 | other |
| absolutely | 4 | degree |
| always | 3 | degree |
| brain → be → exhausted | 21 |
| brain → become → exhausted | 15 |
| brain → get → exhausted | 11 |
| brain → feel → exhausted | 5 |
| negative | neutral | positive |
| 0.674 | 0.239 | 0.087 |
| Raw frequency | 52 |
| Normalized frequency | 0.457 |
| Modifier score | 1.000 |
| Perplexity | 150.414 |