| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [is] [prep] | 271 |
|
| 2 | [prep] that [is] [prep] | 52 |
|
| 3 | what that [is] [prep] | 28 |
|
| 4 | [prep] what that [is] | 11 |
|
