| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [v-ing] | 15842 |
|
| 2 | [det] [modal v] be | 15574 |
|
| 3 | [det] be [v-ing] | 3333 |
|
| 4 | [det] [modal v] [v-ing] | 5 |
|
