| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [prep] a [noun sg] | 1292 |
|
| 2 | [modal v] [prep] a [noun sg] | 192 |
|
| 3 | [modal v] [not/n't] [prep] [noun sg] | 167 |
|
| 4 | [modal v] [not/n't] a [noun sg] | 37 |
|
| 5 | [modal v] [not/n't] [prep] a | 26 |
|
