| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] should [be] [v-ing] at [art] | 8 |
|
| 2 | [pers pn] should [be] [v-ing] at [art] | 6 |
|
| 3 | should [be] [v-ing] at [art] [noun] | 6 |
|
| 4 | should [be] [v-ing] at [art] [noun sg] | 5 |
|
