| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] [adj] weeks | 153 |
|
| 2 | at [adv] [num] weeks | 151 |
|
| 3 | at least [adj] weeks | 136 |
|
| 4 | at [adv] two weeks | 27 |
|
| 5 | at [adv] two weeks | 27 |
|
| 6 | at [adv] three weeks | 22 |
|
| 7 | at [adv] three weeks | 22 |
|
| 8 | at [adv] six weeks | 21 |
|
| 9 | at [adv] six weeks | 21 |
|
| 10 | at [adv] four weeks | 20 |
|
| 11 | at [adv] four weeks | 20 |
|
| 12 | at [adv] eight weeks | 13 |
|
| 13 | at [adv] eight weeks | 13 |
|
| 14 | at about [adj] weeks | 10 |
|
| 15 | at [adv] 12 weeks | 6 |
|
| 16 | at [adv] 12 weeks | 6 |
|
| 17 | at [adv] 26 weeks | 5 |
|
| 18 | at [adv] 26 weeks | 5 |
|
| 19 | at [adv] five weeks | 5 |
|
| 20 | at [adv] 6 weeks | 5 |
|
| 21 | at [adv] five weeks | 5 |
|
| 22 | at [adv] 6 weeks | 5 |
|
