| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been used [prep] | 43 |
|
| 2 | have not been use [prep] | 37 |
|
| 3 | has not been use [prep] | 19 |
|
| 4 | have not been use for | 16 |
|
| 5 | have not been use in | 12 |
|
| 6 | had not been use [prep] | 12 |
|
| 7 | have not been use [prep] | 12 |
|
| 8 | have n't been use [prep] | 6 |
|
