| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a week | 1444 |
|
| 2 | [adv] a week | 1400 |
|
| 3 | then a [noun] | 1271 |
|
| 4 | then a [noun sg] | 1215 |
|
| 5 | then [art] week | 13 |
|
| 6 | then a week | 12 |
|
| 7 | then a week | 12 |
|
