| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have used [det] [noun sg] | 25 |
|
| 2 | have used this [noun] | 17 |
|
| 3 | have used [det] [noun pl] | 9 |
|
| 4 | have used [det] method | 5 |
|
