| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [been] [v-ing] on [det] | 7 |
|
| 2 | [modal v] have [been] [v-ing] on [det] | 7 |
|
| 3 | have [been] [v-ing] on [det] [noun] | 5 |
|
| 4 | have [been] [v-ing] on [det] [noun sg] | 5 |
|
