| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] for | 10597 |
|
| 2 | be [v-ing] [n mass] | 833 |
|
| 3 | [v-ing] [n mass] for | 210 |
|
| 4 | be [n mass] for | 170 |
|
