| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [is] [adv] [verb] | 322 |
|
| 2 | [subord] [is] [adv] [verb] | 319 |
|
| 3 | [conj] [is] often [verb] | 150 |
|
| 4 | [subord] [be] often [verb] | 53 |
|
| 5 | [subord] [is] often [verb] | 50 |
|
