| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] [to-vb] a | 11 |
|
| 2 | has [been] [v-ing] [to-vb] a | 10 |
|
| 3 | [vb -s] [been] trying [to-vb] a | 7 |
|
