| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] to [be] [adj] | 4317 |
|
| 2 | [adj] to [be] [adj] | 3932 |
|
| 3 | difficult [prep] [be] [adj] | 88 |
|
| 4 | difficult to [be] [adj] | 88 |
|
| 5 | difficult to [be] [adj] | 88 |
|
| 6 | difficult [prep] [be] [adj] | 88 |
|
| 7 | difficult to [be] [adj] | 88 |
|
