| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [be] going on [prep] | 5 |
|
| 2 | [modal v] have [been] [v-ing] on [prep] | 5 |
|
| 3 | [vb mod] have [be] [v-ing] on [prep] | 5 |
|
| 4 | [modal v] have [be] [v-ing] on [prep] | 5 |
|
| 5 | [modal v] have be [v-ing] on [prep] | 5 |
|
| 6 | [modal v] have been [v-ing] on [prep] | 5 |
|
