| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] be free | 14 |
|
| 2 | [v-ing] to [be] free | 14 |
|
| 3 | [v-ing] [prep] be free | 14 |
|
| 4 | [v-ing] [prep] [be] free | 14 |
|
