| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it [is] often [verb] that | 6 |
|
| 2 | and it [is] often [verb] [that] | 6 |
|
| 3 | and it [is] often [vb pp] [that] | 6 |
|
| 4 | and it is often [verb] [that] | 5 |
|
