| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] [not/n't] [conj] | 202 |
|
| 2 | [noun sg] [is] [not/n't] [conj] | 168 |
|
| 3 | problem [is] [adv] [conj] | 24 |
|
| 4 | problem [be] [not/n't] [conj] | 12 |
|
| 5 | problem [is] [not/n't] [conj] | 11 |
|
