| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] is | 3600 |
|
| 2 | be [v-ing] [be] | 1899 |
|
| 3 | be [v-ing] be | 1891 |
|
| 4 | be [v-ing] [is] | 1318 |
|
| 5 | [be] [v-ing] is | 1305 |
|
