| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | main [noun] [be] [conj] [pron] | 100 |
|
| 2 | [adj] problem [be] [conj] [pron] | 87 |
|
| 3 | main [noun sg] [be] [conj] [pron] | 84 |
|
| 4 | main problem [be] [conj] [pron] | 12 |
|
