| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] [art] trouble of [v-ing] | 8 |
|
| 2 | to [adj] [art] trouble of [v-ing] | 8 |
|
| 3 | [prep] [adj] [art] trouble of [v-ing] | 8 |
|
| 4 | to [adj] [art] trouble of [v-ing] | 8 |
|
