| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [be] [v-ing] for [det] | 8 |
|
| 2 | which have be [v-ing] for [det] | 8 |
|
| 3 | which have [been] [v-ing] for [det] | 8 |
|
| 4 | which have been [v-ing] for [det] | 8 |
|
