| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is difficult [to-vb] [Wh adv] | 211 |
|
| 2 | is difficult [to-vb] how | 169 |
|
| 3 | is difficult [to-vb] how | 169 |
|
| 4 | is difficult to see [adv] | 118 |
|
| 5 | is difficult [to-vb] [adv] | 100 |
|
| 6 | is difficult [to-vb] [adv prt] | 41 |
|
| 7 | is difficult [to-vb] why | 30 |
|
| 8 | is difficult [to-vb] why | 30 |
|
| 9 | is difficult to know [adv] | 21 |
|
| 10 | is difficult to understand [adv] | 20 |
|
| 11 | is difficult to say [adv] | 18 |
|
| 12 | is difficult [to-vb] down | 14 |
|
| 13 | is difficult [to-vb] down | 14 |
|
| 14 | is difficult to imagine [adv] | 13 |
|
| 15 | is difficult [to-vb] where | 10 |
|
| 16 | is difficult [to-vb] where | 10 |
|
| 17 | is difficult [to-vb] up | 10 |
|
| 18 | is difficult [to-vb] up | 10 |
|
| 19 | is difficult [to-vb] exactly | 9 |
|
| 20 | is difficult [to-vb] just | 9 |
|
| 21 | is difficult [to-vb] exactly | 9 |
|
| 22 | is difficult to explain [adv] | 9 |
|
| 23 | is difficult [to-vb] just | 9 |
|
| 24 | is difficult [to-vb] accurately | 8 |
|
| 25 | is difficult [to-vb] precisely | 8 |
|
| 26 | is difficult [to-vb] precisely | 8 |
|
| 27 | is difficult [to-vb] accurately | 8 |
|
| 28 | is difficult [to-vb] out | 7 |
|
| 29 | is difficult [to-vb] out | 7 |
|
| 30 | is difficult to assess [adv] | 6 |
|
