| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | problem is [prep] | 109 |
|
| 2 | problem [is] [prep] | 97 |
|
| 3 | problem [is] with | 26 |
|
| 4 | problem [is] in | 18 |
|
| 5 | problem [is] to | 14 |
|
| 6 | problems [is] [prep] | 12 |
|
| 7 | problem [is] of | 10 |
|
| 8 | problem [is] for | 8 |
|
| 9 | problem [is] by | 8 |
|
| 10 | problem [is] on | 7 |
|
| 11 | problem [is] at | 6 |
|
