| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there be the [adj] problem of | 15 |
|
| 2 | there be the [adj] problem of | 15 |
|
| 3 | there be the [adj] problem of | 14 |
|
| 4 | there be the [adj] problem of | 12 |
|
| 5 | there is the [adj] problem of | 8 |
|
