| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [is] | 1944 |
|
| 2 | [modal v] [verb] [is] | 1944 |
|
| 3 | can [verb] [be] | 1085 |
|
| 4 | can [verb] [is] | 905 |
|
