| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] be that [pron] [vb past] | 9 |
|
| 2 | is [adj] be that [pers pn] [vb past] | 9 |
|
| 3 | is [adj] is that [pron] [vb past] | 9 |
|
| 4 | is [adj] be that [pron] [vb past] | 9 |
|
| 5 | is certain be that [pron] [vb past] | 7 |
|
| 6 | is certain be that [pron] [vb past] | 7 |
|
