| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] [vb pp] [conj] | 5429 |
|
| 2 | [noun sg] [is] [vb pp] [conj] | 4810 |
|
| 3 | problem [be] [vb pp] [conj] | 43 |
|
| 4 | problem [is] [verb] [conj] | 39 |
|
| 5 | problem [is] [vb pp] [conj] | 30 |
|
