| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] at [art] time | 33 |
|
| 2 | is [verb] at [art] time | 33 |
|
| 3 | is [vb pp] at [art] time | 27 |
|
| 4 | is [verb] at a time | 17 |
|
| 5 | is [verb] at a time | 17 |
|
| 6 | is [verb] at the time | 16 |
|
| 7 | is [verb] at the time | 16 |
|
| 8 | is [v-ing] at [art] time | 6 |
|
