| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] and it is often [verb] | 6 |
|
| 2 | and it is often [adj] [verb] | 19 |
|
| 3 | and it is often [adj] [verb] | 16 |
|
| 4 | and it is often difficult [verb] | 5 |
|
| 5 | and it is often difficult [verb] | 5 |
|
| 6 | and it is often [verb] [prep] | 6 |
|
| 7 | and it is often [verb] [prep] | 6 |
|
| 8 | and it is often [verb] that | 5 |
|
| 9 | and it is often [verb] [that] | 5 |
|
| 10 | and it is often [verb] that | 5 |
|
| 11 | and it is often [verb] [conj] | 5 |
|
