| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [v-ing] [noun] | 421 |
|
| 2 | should be [v-ing] [noun] | 105 |
|
| 3 | should [adv] be [v-ing] | 94 |
|
| 4 | should [adv] be [noun] | 42 |
|
