| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] a [num] | 452 |
|
| 2 | [prep] [adv] a [num] | 451 |
|
| 3 | [prep] perhaps a [adj] | 59 |
|
| 4 | [prep] perhaps [art] [num] | 17 |
|
| 5 | [prep] perhaps a [num] | 16 |
|
| 6 | [prep] perhaps a [num] | 16 |
|
