| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [v-ing] at [art] [noun] | 241 |
|
| 2 | [is] [v-ing] at [art] [noun sg] | 207 |
|
| 3 | [be] [v-ing] at [art] time | 97 |
|
| 4 | [is] [verb] at [art] time | 35 |
|
| 5 | [is] [v-ing] [prep] [art] time | 15 |
|
| 6 | [is] [v-ing] at [art] time | 8 |
|
| 7 | [is] [v-ing] at [art] time | 8 |
|
