| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [to-vb] [adv prt] [prep] [noun] | 93 |
|
| 2 | used [to-vb] [adv] [prep] [noun prp] | 44 |
|
| 3 | [modal v] [to-vb] [adv prt] [prep] [noun prp] | 42 |
|
| 4 | used [verb] [adv prt] [prep] [noun prp] | 36 |
|
