| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have be [v-ing] a [noun] | 21 |
|
| 2 | [Wh pn] have been [v-ing] a [noun] | 21 |
|
| 3 | [Wh pn] have be [v-ing] a [noun sg] | 20 |
|
| 4 | [Wh pn] had be [v-ing] a [noun] | 11 |
|
