| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [det] | 2434 |
|
| 2 | [verb] [det] [modal v] | 2090 |
|
| 3 | is [verb] [modal v] | 412 |
|
| 4 | is [det] [modal v] | 17 |
|
