| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [verb] to [be] [v-ing] | 1360 |
|
| 2 | [pron] [vb past] to [be] [v-ing] | 678 |
|
| 3 | [pron] happen to [be] [v-ing] | 94 |
|
| 4 | [pron] happened to [be] [verb] | 69 |
|
| 5 | [pron] happened [prep] [be] [v-ing] | 53 |
|
