| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [v-ing] [prep] [det] [noun sg] | 9 |
|
| 2 | should be [v-ing] [prep] [det] [noun sg] | 9 |
|
| 3 | should be [v-ing] [prep] [det] [noun sg] | 9 |
|
| 4 | should be [v-ing] [prep] this [noun sg] | 6 |
|
