| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] a [noun] | 8910 |
|
| 2 | be a [noun pl] [noun] | 293 |
|
| 3 | [v-ing] a [noun pl] [noun] | 169 |
|
| 4 | be [v-ing] [noun pl] [noun] | 63 |
|
| 5 | be [v-ing] a [noun pl] | 59 |
|
