| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not let [pron] [vb infin] | 304 |
|
| 2 | could let [pron] [vb infin] | 75 |
|
| 3 | could not let [pron] | 20 |
|
| 4 | could not [pron] [vb infin] | 11 |
|
