| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] problem that [vb base] | 16 |
|
| 2 | [prep] problems that [vb base] | 16 |
|
| 3 | of problem that [vb base] | 10 |
|
| 4 | of problem that [vb base] | 10 |
|
| 5 | [prep] problem that have | 7 |
|
| 6 | [prep] problem that arise | 5 |
|
