| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [modal v] [be] [verb] to | 1994 |
|
| 2 | [noun pl] [modal v] [be] refer to | 57 |
|
| 3 | [modal v] [be] [verb] refer to | 18 |
|
| 4 | [noun pl] [be] [verb] refer to | 7 |
|
| 5 | [noun pl] [modal v] [be] [verb] refer | 6 |
|
