| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] on [prep] [noun pl] | 68 |
|
| 2 | be [v-ing] [prep] some [noun pl] | 63 |
|
| 3 | be [v-ing] on [prep] some | 21 |
|
| 4 | [v-ing] on [prep] some [noun pl] | 8 |
|
