| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] at the time | 836 |
|
| 2 | [num] at the time | 142 |
|
| 3 | fifteen at the [noun sg] | 9 |
|
| 4 | fifteen at the [noun] | 9 |
|
| 5 | fifteen [prep] the time | 6 |
|
| 6 | fifteen [prep] the time | 6 |
|
| 7 | fifteen at the time | 5 |
|
| 8 | fifteen at the time | 5 |
|
| 9 | fifteen at the time | 5 |
|
| 10 | fifteen at [art] time | 5 |
|
| 11 | fifteen at [art] time | 5 |
|
| 12 | fifteen at the time | 5 |
|
