| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] not a [noun sg] | 3962 |
|
| 2 | [is] usually a [noun sg] | 150 |
|
| 3 | [is] not usually a | 25 |
|
| 4 | not usually a [noun sg] | 16 |
|
