| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [verb] [modal v] [vb infin] | 174 |
|
| 2 | [is] [verb] [vb mod] [vb infin] | 174 |
|
| 3 | [be] [verb] should [vb infin] | 34 |
|
| 4 | [is] [verb] should [vb infin] | 13 |
|
| 5 | [is] [verb] should [verb] | 13 |
|
