| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [v-ing] [prep] a | 5774 |
|
| 2 | been [v-ing] [prep] a | 665 |
|
| 3 | [noun] been [v-ing] [prep] | 49 |
|
| 4 | [noun] been [prep] a | 14 |
|
| 5 | [noun] been [v-ing] a | 9 |
|
