| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] often [verb] | 1943 |
|
| 2 | [is] often [vb pp] | 1895 |
|
| 3 | [is] [adv] assumed | 197 |
|
| 4 | [is] [adv] assumed | 190 |
|
| 5 | [be] often assumed | 44 |
|
| 6 | [is] often assumed | 40 |
|
| 7 | [is] often assume | 40 |
|
