| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at least [prep] a [noun sg] | 81 |
|
| 2 | or at least a [noun sg] | 36 |
|
| 3 | or at least [prep] [noun sg] | 16 |
|
| 4 | or at least [prep] a | 12 |
|
