| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] what [verb] | 1167 |
|
| 2 | [is] [pron] keep | 63 |
|
| 3 | [be] what keep | 28 |
|
| 4 | [is] what keep | 22 |
|
| 5 | [is] [Wh det] keep | 22 |
|
