| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] [is] [adv] [adj] [verb] | 53 |
|
| 2 | [pron] [pron] [is] [adv] difficult [verb] | 17 |
|
| 3 | which [pron] [is] [adv] difficult [verb] | 12 |
|
| 4 | which [pron] [be] [adv] difficult [verb] | 12 |
|
