| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is difficult [to-vb] [adv] | 352 |
|
| 2 | [is] difficult [to-vb] [Wh adv] | 238 |
|
| 3 | [is] difficult [to-vb] how | 184 |
|
| 4 | [is] difficult [to-vb] how | 184 |
|
| 5 | [is] difficult to see [adv] | 128 |
|
| 6 | [is] difficult [to-vb] [adv] | 122 |
|
| 7 | 's difficult [to-vb] [adv] | 70 |
|
| 8 | [is] difficult [to-vb] [adv prt] | 61 |
|
| 9 | [is] difficult [to-vb] why | 38 |
|
| 10 | [is] difficult [to-vb] why | 38 |
|
| 11 | [is] difficult to know [adv] | 33 |
|
| 12 | [is] difficult to understand [adv] | 23 |
|
| 13 | [is] difficult to say [adv] | 22 |
|
| 14 | [is] difficult [to-vb] out | 20 |
|
| 15 | [is] difficult [to-vb] out | 20 |
|
| 16 | [is] difficult [to-vb] down | 15 |
|
| 17 | [is] difficult [to-vb] down | 15 |
|
| 18 | [is] difficult [to-vb] exactly | 14 |
|
| 19 | [is] difficult to imagine [adv] | 14 |
|
| 20 | [is] difficult [to-vb] exactly | 14 |
|
| 21 | [is] difficult [to-vb] up | 12 |
|
| 22 | [is] difficult [to-vb] just | 12 |
|
| 23 | [is] difficult [to-vb] just | 12 |
|
| 24 | [is] difficult [to-vb] up | 12 |
|
| 25 | [is] difficult [to-vb] where | 11 |
|
| 26 | [is] difficult [to-vb] where | 11 |
|
| 27 | [is] difficult to explain [adv] | 10 |
|
| 28 | [is] difficult [to-vb] precisely | 9 |
|
| 29 | [is] difficult to work [adv] | 9 |
|
| 30 | [is] difficult [to-vb] precisely | 9 |
|
