| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [been] | 8 |
|
| 2 | [vb base] [be] been | 8 |
|
| 3 | [vb base] [been] [been] | 8 |
|
| 4 | [vb base] be [been] | 8 |
|
| 5 | have [be] [been] | 7 |
|
