| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [prep] a [noun sg] | 1292 |
|
| 2 | 's [not/n't] a [noun sg] | 1020 |
|
| 3 | 's [prep] a [noun sg] | 825 |
|
| 4 | 's [not/n't] [prep] [noun sg] | 135 |
|
| 5 | 's [not/n't] [prep] a | 47 |
|
