| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [adv] for [det] | 44 |
|
| 2 | have been used for [det] | 27 |
|
| 3 | have been used [adv] for | 12 |
|
| 4 | been used [adv] for [det] | 5 |
|
