| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [to-vb] [adv prt] i | 7 |
|
| 2 | [vb mod] [to-vb] [adv prt] i | 7 |
|
| 3 | [modal v] [to-vb] [adv prt] i | 7 |
|
| 4 | used [to-vb] [adv prt] i | 7 |
|
