| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it was [verb] [adj] [noun] | 504 |
|
| 2 | it difficult [verb] [adj] [noun] | 65 |
|
| 3 | it was difficult [verb] [adj] | 37 |
|
| 4 | it was difficult [verb] [noun] | 27 |
|
| 5 | was difficult [verb] [adj] [noun] | 23 |
|
