| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [verb] [been] [v-ing] for [noun] | 6 |
|
| 2 | [Wh det] have [been] [v-ing] for [noun] | 6 |
|
| 3 | [Wh det] [verb] been [v-ing] for [noun] | 6 |
|
| 4 | [Wh det] [verb] [been] [v-ing] for [noun pl] | 5 |
|
