| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] announce [conj] it is [v-ing] | 9 |
|
| 2 | [vb -s] announce [conj] it is [v-ing] | 9 |
|
| 3 | have announce [conj] it is [v-ing] | 9 |
|
| 4 | has announce [conj] it is [v-ing] | 9 |
|
