| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] have [been] [verb] [prep] | 237 |
|
| 2 | [pron] [vb mod] have [been] [v-ing] [prep] | 178 |
|
| 3 | [pers pn] [vb mod] have [been] [v-ing] [prep] | 168 |
|
| 4 | it [vb mod] have [been] [v-ing] [prep] | 14 |
|
| 5 | it [vb mod] [verb] [been] [v-ing] [prep] | 14 |
|
| 6 | it [vb mod] have [be] [v-ing] [prep] | 14 |
|
| 7 | it [vb mod] have [been] [v-ing] [prep] | 14 |
|
| 8 | it [modal v] have [been] [v-ing] [prep] | 14 |
|
