| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [prep] this | 226 |
|
| 2 | [was/were] [v-ing] on [adj] | 202 |
|
| 3 | [be] [v-ing] on this | 113 |
|
| 4 | [was/were] [verb] on this | 89 |
|
| 5 | [was/were] [v-ing] on [det] | 87 |
|
| 6 | [was/were] [v-ing] on this | 24 |
|
