| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] very difficult [to-vb] [conj] [art] | 12 |
|
| 2 | be very difficult [to-vb] [conj] [art] | 12 |
|
| 3 | [be] very difficult [to-vb] [conj] [art] | 8 |
|
| 4 | be very difficult [to-vb] [conj] [art] | 8 |
|
| 5 | very difficult [to-vb] [conj] [art] [noun] | 13 |
|
| 6 | very difficult [to-vb] [conj] [art] [noun sg] | 11 |
|
