| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [art] very difficult [noun] | 99 |
|
| 2 | [be] [art] very difficult [noun sg] | 98 |
|
| 3 | [be] [art] very [adj] period | 16 |
|
| 4 | [be] [art] [adv] difficult period | 6 |
|
| 5 | [be] [art] very difficult period | 5 |
|
| 6 | [be] [art] very difficult period | 5 |
|
