| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] [v-ing] [prep] | 6063 |
|
| 2 | [vb infin] [been] [verb] [prep] | 4037 |
|
| 3 | [vb infin] [be] [v-ing] [prep] | 369 |
|
