| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pron] [be] [conj] | 71 |
|
| 2 | [prep] [pron] [pron] [is] [conj] | 68 |
|
| 3 | [prep] [Wh det] [pron] [is] [conj] | 51 |
|
| 4 | [prep] what [pron] [is] [conj] | 36 |
|
