| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] be [v-ing] for | 247 |
|
| 2 | be [v-ing] for an | 244 |
|
| 3 | [conj] [v-ing] for an | 56 |
|
| 4 | [conj] be [v-ing] an | 47 |
|
