| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a few problems | 36 |
|
| 2 | [verb] a few problems | 36 |
|
| 3 | have a few problems | 15 |
|
| 4 | [vb past] a few problems | 11 |
|
| 5 | cause a few problems | 8 |
|
| 6 | [vb infin] a few problems | 7 |
|
| 7 | [vb pp] a few problems | 7 |
|
| 8 | had a few problems | 6 |
|
