| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] [is] [adv] a | 4204 |
|
| 2 | [ex0] [is] often a | 115 |
|
| 3 | [is] [adv] often a | 43 |
|
| 4 | [ex0] [is] [adv] often | 10 |
|
