| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [vb pp] to [art] trouble of | 8 |
|
| 2 | [verb] [vb pp] to [art] trouble of | 8 |
|
| 3 | [vb past] [vb pp] to [art] trouble of | 6 |
|
| 4 | had [vb pp] to [art] trouble of | 5 |
|
| 5 | [vb pp] to [art] trouble of [v-ing] | 10 |
|
| 6 | [vb pp] to [art] trouble of [verb] | 10 |
|
