| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been a [noun] [noun] | 722 |
|
| 2 | once a [noun] [noun] | 126 |
|
| 3 | once been a [noun] | 59 |
|
| 4 | once been [noun] [noun] | 8 |
|
