| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | let [pron] [vb infin] [pos pn] | 570 |
|
| 2 | must let [pron] [vb infin] | 36 |
|
| 3 | must [pron] [vb infin] [pos pn] | 12 |
|
