| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the problems that [vb base] | 66 |
|
| 2 | the problems that [vb base] | 66 |
|
| 3 | the problems that have | 22 |
|
| 4 | the problems that arise | 15 |
|
| 5 | the problems that face | 7 |
|
