| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] at least a | 11 |
|
| 2 | be [vb pp] [prep] at least a | 11 |
|
| 3 | be [vb pp] for at least a | 6 |
|
| 4 | be [vb pp] for at least a | 6 |
|
| 5 | be [vb pp] at least [adv] a | 13 |
|
| 6 | be [vb pp] at least [adv] a | 13 |
|
| 7 | be [vb pp] at least once a | 12 |
|
| 8 | be [vb pp] at least once a | 12 |
|
