| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a time | 636 |
|
| 2 | written [prep] a [noun] | 260 |
|
| 3 | written [prep] a [noun sg] | 248 |
|
| 4 | [vb pp] [prep] a time | 233 |
|
| 5 | written [prep] [art] time | 22 |
|
| 6 | write [prep] a time | 15 |
|
| 7 | written [prep] a time | 8 |
|
| 8 | written [prep] a time | 8 |
|
