| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be [v-ing] | 148136 |
|
| 2 | [pron] [modal v] be | 123492 |
|
| 3 | [modal v] be [v-ing] | 15842 |
|
| 4 | [pron] [modal v] [v-ing] | 83 |
|
