| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] is | 37 |
|
| 2 | [vb mod] [is] | 37 |
|
| 3 | can [is] | 11 |
|
| 4 | can [is] | 11 |
|
| 5 | must [is] | 5 |
|
| 6 | must [is] | 5 |
|
