| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [been] [vb pp] [prep] [art] | 3101 |
|
| 2 | [adv] [vb pp] [prep] [art] period | 62 |
|
| 3 | [been] [vb pp] [prep] [art] period | 38 |
|
