| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [not/n't] [adv] a | 1185 |
|
| 2 | is [not/n't] [adv] [conj] | 303 |
|
| 3 | [not/n't] [adv] [conj] a | 101 |
|
| 4 | is [adv] [conj] a | 52 |
|
| 5 | is [not/n't] [conj] a | 21 |
|
