| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could n't be certain | 13 |
|
| 2 | [pers pn] could n't be certain | 13 |
|
| 3 | she could n't be certain | 6 |
|
| 4 | she could n't be certain | 6 |
|
| 5 | i could n't be certain | 5 |
|
| 6 | i could n't be certain | 5 |
|
