| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [adv] [prep] | 1249 |
|
| 2 | been used [prep] | 1086 |
|
| 3 | used [adv] [prep] | 1020 |
|
| 4 | been used [adv] | 241 |
|
