| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] let them [vb infin] | 124 |
|
| 2 | [modal v] [not/n't] let them | 96 |
|
| 3 | [modal v] let them [vb infin] | 57 |
|
| 4 | [modal v] [not/n't] let [vb infin] | 46 |
|
