| very | 51 | degree |
| highly | 32 | degree |
| extremely | 22 | degree |
| device → be → efficient | 413 |
| device → be efficient to → use | 4 |
| device → provide → an efficient | 3 |
| negative | neutral | positive |
| 0.030 | 0.212 | 0.758 |
| Raw frequency | 420 |
| Normalized frequency | 0.660 |
| Modifier score | 0.731 |
| Perplexity | 297.645 |