| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [pron] [adv] | 8303 |
|
| 2 | [pron] [adv] difficult | 742 |
|
| 3 | [v-ing] [pron] difficult | 172 |
|
| 4 | [v-ing] [adv] difficult | 94 |
|
