| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for several [noun] at [art] time | 13 |
|
| 2 | for several [noun pl] at [art] time | 13 |
|
| 3 | for several [noun] at a time | 13 |
|
| 4 | for several [noun] at a time | 13 |
|
| 5 | for several [noun] at [art] time | 13 |
|
