| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] [Wh det] [pron] [vb base] | 13 |
|
| 2 | is [prep] [Wh det] [pers pn] [vb base] | 13 |
|
| 3 | is [prep] what [pron] [vb base] | 11 |
|
