| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] have [been] used | 349 |
|
| 2 | [noun pl] have be used | 349 |
|
| 3 | [noun pl] have been used | 349 |
|
| 4 | [noun pl] have [be] used | 267 |
|
| 5 | [noun pl] had [be] used | 56 |
|
| 6 | [noun pl] has [be] used | 24 |
|
| 7 | methods have [be] used | 15 |
|
| 8 | techniques have [be] used | 15 |
|
| 9 | materials have [be] used | 5 |
|
| 10 | resources have [be] used | 5 |
|
