| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] problem [subord] | 101 |
|
| 2 | [prep] [art] problem [noun sg] | 87 |
|
| 3 | [prep] [art] [subord] [noun sg] | 10 |
|
| 4 | [art] problem [subord] [noun sg] | 8 |
|
