| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | problems as | 213 |
|
| 2 | problems than | 107 |
|
| 3 | problems if | 88 |
|
| 4 | problems when | 84 |
|
| 5 | problems because | 79 |
|
| 6 | problems before | 18 |
|
| 7 | problems while | 15 |
|
| 8 | problems until | 11 |
|
| 9 | problems where | 9 |
|
| 10 | problems after | 9 |
|
| 11 | problems since | 8 |
|
| 12 | problems once | 7 |
|
| 13 | problems although | 6 |
|
