| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [prep] a [noun] | 765 |
|
| 2 | [been] [prep] [art] [noun pl] | 329 |
|
| 3 | [be] [prep] a [noun pl] | 55 |
|
| 4 | [been] [prep] a [noun pl] | 17 |
|
