| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] [be] [verb] to | 303 |
|
| 2 | [pron] [modal v] [be] refer to | 56 |
|
| 3 | they [modal v] [be] refer to | 8 |
|
| 4 | they [modal v] [be] refer [prep] | 8 |
|
| 5 | they [modal v] [be] refer [prep] | 8 |
|
