| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [subord] it is often [verb] | 9 |
|
| 2 | [noun sg] [subord] it is often [verb] | 9 |
|
| 3 | [subord] it is [adv] often [verb] | 5 |
|
| 4 | [subord] it is often [adj] [verb] | 11 |
|
| 5 | [subord] it is often [adj] [verb] | 9 |
|
| 6 | [subord] it is often [verb] [prep] | 14 |
|
| 7 | [subord] it is often [verb] [prep] | 14 |
|
| 8 | [subord] it is often [verb] [conj] | 8 |
|
| 9 | [subord] it is often [verb] that | 6 |
|
| 10 | [subord] it is often [verb] [that] | 6 |
|
| 11 | [subord] it is often [verb] that | 6 |
|
