| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] why [pron] have [been] [v-ing] | 8 |
|
| 2 | [be] why [pron] have [been] [v-ing] | 8 |
|
| 3 | be why [pron] have [been] [v-ing] | 8 |
|
| 4 | [is] why [pron] have [been] [v-ing] | 7 |
|
| 5 | why [pron] have [been] [v-ing] [prep] | 6 |
|
| 6 | why [pron] have [been] [v-ing] [adv] | 6 |
|
| 7 | why [pron] have [been] [v-ing] [prep] | 6 |
|
