| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [pron] [pron] [be] [v-ing] [prep] | 1260 |
|
| 2 | [verb] what [pron] [be] [verb] [prep] | 1060 |
|
| 3 | [verb] [Wh det] [pron] [be] [v-ing] [prep] | 989 |
|
| 4 | [verb] what [pron] [be] [v-ing] [prep] | 978 |
|
