| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it be difficult | 735 |
|
| 2 | while it be [adj] | 262 |
|
| 3 | while it be [adj] | 256 |
|
| 4 | while it be difficult | 8 |
|
| 5 | while it [be] difficult | 8 |
|
| 6 | while [pron] be difficult | 8 |
|
| 7 | while [pers pn] be difficult | 8 |
|
| 8 | while it be difficult | 8 |
|
