| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [was/were] [prep] [verb] | 420 |
|
| 2 | it [was/were] [prep] [v-ing] | 383 |
|
| 3 | it [be] [prep] having | 58 |
|
| 4 | it [was/were] [prep] have | 25 |
|
| 5 | [pron] [was/were] [prep] having | 24 |
|
