| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | main [noun] [be] the [noun] | 133 |
|
| 2 | [adj] problem [be] the [noun] | 92 |
|
| 3 | main [noun sg] [be] the [noun] | 89 |
|
| 4 | main problem [be] the [noun] | 7 |
|
| 5 | main problem [be] the [noun] | 7 |
|
| 6 | main problem [be] [art] [noun] | 7 |
|
| 7 | main problem [be] [art] [noun] | 7 |
|
