| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [vb past] [Wh det] | 593 |
|
| 2 | [noun prp] [Wh det] is | 485 |
|
| 3 | [vb past] [Wh det] is | 78 |
|
| 4 | [noun prp] [vb past] is | 46 |
|
