| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adj] [verb] on [art] | 169 |
|
| 2 | [be] [adj] [verb] on [art] | 159 |
|
| 3 | [be] difficult [verb] [prep] [art] | 53 |
|
| 4 | [be] difficult [verb] [prep] [art] | 53 |
|
| 5 | [be] difficult [verb] on [art] | 14 |
|
| 6 | [be] difficult [verb] on [art] | 5 |
|
| 7 | [be] difficult [verb] on [art] | 5 |
|
