| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [that] it [be] [verb] | 88 |
|
| 2 | [is] [that] [pron] [was/were] [verb] | 69 |
|
| 3 | [be] [that] it [was/were] [verb] | 47 |
|
| 4 | [is] [conj] it [was/were] [verb] | 19 |
|
