| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [pron] [verb] to [be] a | 167 |
|
| 2 | [Wh det] [pron] [vb past] to [be] [art] | 151 |
|
| 3 | [pron] [pron] [vb past] to [be] a | 85 |
|
| 4 | [Wh det] [pron] [vb past] [prep] [be] a | 72 |
|
