| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] i [vb infin] | 995 |
|
| 2 | to let i [vb infin] | 160 |
|
| 3 | [vb infin] to let i | 19 |
|
| 4 | [vb infin] to let [vb infin] | 9 |
|
