| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [n mass] [modal v] [be] [vb pp] | 1546 |
|
| 2 | [v-ing] [modal v] [be] [vb pp] | 265 |
|
| 3 | [v-ing] [n mass] [modal v] [be] | 23 |
|
