| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to the trouble of [v-ing] [art] | 13 |
|
| 2 | to the trouble of [v-ing] [art] | 13 |
|
| 3 | to [art] trouble of [v-ing] [art] | 13 |
|
| 4 | to [art] trouble of [v-ing] a | 8 |
|
