| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [Wh det] [noun sg] [is] [prep] | 5 |
|
| 2 | at [Wh det] [noun] [is] [prep] | 5 |
|
| 3 | at [Wh det] [is] [verb] [prep] | 31 |
|
| 4 | at [Wh det] [is] [vb pp] [prep] | 19 |
|
| 5 | at [Wh det] [is] [v-ing] [prep] | 12 |
|
| 6 | at [Wh det] [is] happen [prep] | 11 |
|
| 7 | at [Wh det] [is] happening [prep] | 11 |
|
| 8 | at [Wh det] [is] [adj] [prep] | 8 |
|
| 9 | at [Wh det] [is] [adj] [prep] | 6 |
|
