| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] [conj] it [be] | 667 |
|
| 2 | [noun sg] [is] [conj] it [be] | 591 |
|
| 3 | problem [is] [conj] [pron] [be] | 78 |
|
| 4 | problem [be] [conj] it [be] | 23 |
|
| 5 | problem [is] [conj] it [be] | 19 |
|
