| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] what [pers pn] had [verb] | 170 |
|
| 2 | [vb past] what [pers pn] [vb past] to do | 60 |
|
| 3 | [vb past] what [pers pn] [verb] to do | 60 |
|
| 4 | [vb past] what [pers pn] had do | 55 |
|
| 5 | [vb past] what [pers pn] had [to-vb] | 47 |
|
| 6 | [verb] what [pers pn] had to do | 46 |
|
| 7 | [vb past] [pron] [pers pn] had to do | 33 |
|
| 8 | [vb past] [Wh det] [pers pn] had to do | 32 |
|
| 9 | [vb past] what [pron] had to do | 30 |
|
| 10 | [vb past] what [pers pn] had to do | 30 |
|
| 11 | [vb past] what [pers pn] have to do | 30 |
|
