| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is often [verb] | 1903 |
|
| 2 | is often [vb pp] | 1861 |
|
| 3 | is [adv] assumed | 195 |
|
| 4 | is [adv] assumed | 188 |
|
| 5 | be often assumed | 44 |
|
| 6 | [be] often assumed | 44 |
|
| 7 | [is] often assumed | 40 |
|
| 8 | is often assumed | 40 |
|
| 9 | is often assume | 40 |
|
