| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] a [noun] [prep] | 4798 |
|
| 2 | [prep] be a [noun] [prep] | 2671 |
|
| 3 | [v-ing] be a [noun] [prep] | 101 |
|
| 4 | [prep] [v-ing] be a [noun] | 20 |
|
