| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be [v-ing] | 148136 |
|
| 2 | [pron] [vb -s] be | 21366 |
|
| 3 | [vb -s] be [v-ing] | 4818 |
|
| 4 | [pron] [vb -s] [v-ing] | 2092 |
|
