| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they have [been] [v-ing] | 54 |
|
| 2 | they have [been] [v-ing] [noun] | 21 |
|
| 3 | [conj] have [been] [v-ing] [noun] | 15 |
|
