| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] | 149082 |
|
| 2 | be [to-vb] | 45047 |
|
| 3 | [be] [to-vb] | 45047 |
|
| 4 | [been] [to-vb] | 1257 |
|
