| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it be [adj] [to-vb] | 905 |
|
| 2 | and it be [adj] [to-vb] | 864 |
|
| 3 | [conj] it be difficult [to-vb] | 549 |
|
| 4 | and [pron] be difficult [to-vb] | 131 |
|
| 5 | and it be difficult [verb] | 129 |
|
| 6 | and it [be] difficult [to-vb] | 127 |
|
| 7 | and it be difficult [to-vb] | 127 |
|
