| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | an [noun] [prep] [v-ing] | 1433 |
|
| 2 | been an [noun] [prep] | 450 |
|
| 3 | been [noun] [prep] [v-ing] | 40 |
|
| 4 | been an [noun] [v-ing] | 9 |
|
