| on the school letter head | 18 | location |
| on company letterhead | 4 | location |
| on the contrary | 4 | other |
| letter → be → original | 52 |
| letter → be → an original | 10 |
| letter → be → the original | 5 |
| negative | neutral | positive |
| 0.087 | 0.735 | 0.178 |
| Raw frequency | 67 |
| Normalized frequency | 0.413 |
| Modifier score | 1.000 |
| Perplexity | 234.479 |