| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [adv] [verb] for | 341 |
|
| 2 | [be] [adv] used for | 340 |
|
| 3 | [been] [adv] [vb pp] for | 303 |
|
| 4 | [been] [adv] used [prep] | 72 |
|
| 5 | [been] [adv] use for | 12 |
|
