| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] [verb] [det] | 1405 |
|
| 2 | they [modal v] [verb] been | 839 |
|
| 3 | [modal v] [verb] been [det] | 370 |
|
| 4 | they [verb] been [det] | 23 |
|
