| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have [vb pp] [adv] [prep] | 590 |
|
| 2 | [pron] have [vb pp] back [prep] | 281 |
|
| 3 | who have [vb pp] back [prep] | 31 |
|
| 4 | who [verb] [vb pp] back [prep] | 31 |
|
| 5 | who have [verb] back [prep] | 31 |
|
