| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at [adj] time [prep] | 410 |
|
| 2 | [noun] at a time [prep] | 212 |
|
| 3 | [noun] at a [adj] time | 148 |
|
| 4 | at a [adj] time [prep] | 71 |
|
| 5 | [noun] a [adj] time [prep] | 26 |
|
| 6 | [noun] at a [adj] [prep] | 9 |
|
