| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [prep] a [noun] [conj] | 909 |
|
| 2 | used [to-vb] [prep] a [noun] | 101 |
|
| 3 | used [to-vb] [prep] [noun] [conj] | 57 |
|
| 4 | used [to-vb] a [noun] [conj] | 42 |
|
