| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [adv] [vb pp] | 1474 |
|
| 2 | it is [adv] [vb pp] [that] | 1240 |
|
| 3 | [conj] it is [vb pp] [that] | 912 |
|
| 4 | [conj] it is [adv] [that] | 77 |
|
