| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [adv] [been] used | 138 |
|
| 2 | [vb -s] [been] used for | 69 |
|
| 3 | [adv] [been] used for | 32 |
|
| 4 | [vb -s] [adv] [been] for | 10 |
|
