| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] i | 2193 |
|
| 2 | be [v-ing] [be] | 1899 |
|
| 3 | be i [be] | 579 |
|
| 4 | [v-ing] i [be] | 315 |
|
