| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had used [det] [noun] | 18 |
|
| 2 | [vb past] used [det] [noun sg] | 18 |
|
| 3 | [vb past] used this [noun] | 8 |
|
| 4 | [vb past] used some [noun] | 5 |
|
