| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] 20 [noun] | 87 |
|
| 2 | at least 20 [noun] | 73 |
|
| 3 | at [adv] 20 [noun pl] | 64 |
|
| 4 | at [adv] 20 [n mass] | 19 |
|
| 5 | at [adv] 20 year | 13 |
|
| 6 | at [adv] 20 years | 13 |
|
| 7 | at [adv] 20 people | 11 |
|
| 8 | at [adv] 20 people | 11 |
|
| 9 | at around 20 [noun] | 7 |
|
| 10 | at [adv] 20 minute | 6 |
|
| 11 | at [adv] 20 minutes | 6 |
|
| 12 | at about 20 [noun] | 5 |
|
