| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] some [noun] | 254 |
|
| 2 | be [v-ing] on [prep] [noun] | 246 |
|
| 3 | [v-ing] on [prep] some [noun] | 28 |
|
| 4 | be [v-ing] on [prep] some | 21 |
|
