| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [adv] used [prep] | 22 |
|
| 2 | have been [adv] used [prep] | 22 |
|
| 3 | have [been] [adv] used [prep] | 22 |
|
| 4 | have [been] [adv] used in | 11 |
|
| 5 | have [been] [adv] used in | 11 |
|
| 6 | have [been] widely used [prep] | 9 |
|
| 7 | have [been] widely used [prep] | 9 |
|
| 8 | have [been] successfully used [prep] | 5 |
|
| 9 | have [been] successfully used [prep] | 5 |
|
