| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] [v-ing] [adj] | 310 |
|
| 2 | [was/were] [v-ing] on [adj] | 202 |
|
| 3 | it [was/were] on [adj] | 113 |
|
| 4 | it [was/were] [v-ing] on | 57 |
|
