| very | 30 | degree |
| sometimes | 20 | temporal |
| because of their necessity | 14 | cause |
| customer → be → difficult | 209 |
| customer → be difficult to → deal | 20 |
| customer → be difficult to → handle | 7 |
| customer → be difficult to → work | 7 |
| customer → be difficult to → understand | 5 |
| customer → be difficult to → satisfy | 3 |
| negative | neutral | positive |
| 0.525 | 0.354 | 0.121 |
| Raw frequency | 251 |
| Normalized frequency | 0.561 |
| Modifier score | 0.530 |
| Perplexity | 135.321 |