| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have [been] [v-ing] [adv] [adj] | 6 |
|
| 2 | who have [be] [v-ing] [adv] [adj] | 6 |
|
| 3 | [Wh pn] have be [v-ing] [adv] [adj] | 6 |
|
| 4 | [Wh pn] have been [v-ing] [adv] [adj] | 6 |
|
