| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] use [verb] | 219 |
|
| 2 | is often [verb] [verb] | 119 |
|
| 3 | be often use [verb] | 65 |
|
| 4 | [be] often use [verb] | 65 |
|
| 5 | [is] often use [verb] | 38 |
|
