| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] it [adv] difficult [to-vb] | 31 |
|
| 2 | [be] [v-ing] it [adv] difficult [to-vb] | 30 |
|
| 3 | [be] find it [adv] difficult [to-vb] | 28 |
|
| 4 | [be] finding it [adv] difficult [to-vb] | 28 |
|
