| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | problem be [det] | 159 |
|
| 2 | problem [is] [det] | 129 |
|
| 3 | problem is [det] | 129 |
|
| 4 | problem [be] that | 129 |
|
| 5 | problem [was/were] [det] | 27 |
|
| 6 | problem was [det] | 26 |
|
| 7 | problem [be] this | 14 |
|
