| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't let [indef pn] happen to | 5 |
|
| 2 | [not/n't] let [indef pn] happen to | 5 |
|
| 3 | [adv] let [indef pn] happen to | 5 |
|
| 4 | not let [indef pn] happen to | 5 |
|
| 5 | let [indef pn] happen to [pron] | 5 |
|
