| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [verb] [pron] | 800 |
|
| 2 | [Wh det] is [vb pp] [verb] | 695 |
|
| 3 | [Wh det] is [verb] [pron] | 169 |
|
| 4 | [Wh det] is [vb pp] [pron] | 17 |
|
