| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [prep] a [noun sg] | 1292 |
|
| 2 | are [prep] a [noun sg] | 749 |
|
| 3 | are [not/n't] [prep] [noun sg] | 269 |
|
| 4 | are [not/n't] a [noun sg] | 195 |
|
| 5 | are [not/n't] [prep] a | 81 |
|
