| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have not heard from | 15 |
|
| 2 | [pers pn] have not heard from | 11 |
|
| 3 | [pron] had not heard from | 8 |
|
| 4 | [pron] have not heard from | 5 |
|
