| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be [vb pp] to be [v-ing] | 48 |
|
| 2 | to [be] [vb pp] to be [v-ing] | 47 |
|
| 3 | [prep] [be] [vb pp] to be [v-ing] | 47 |
|
| 4 | [prep] be [vb pp] to be [v-ing] | 47 |
|
| 5 | [prep] [be] seen to be [v-ing] | 39 |
|
| 6 | [prep] [be] [vb pp] to be doing | 10 |
|
| 7 | [prep] [be] [vb pp] to be taking | 5 |
|
